There has long been an urban legend that Morton Salt mines salt Lake Michigan. Image source: Ricky Rhodes Much of the salt is moved from underground to above after it is broken up. Although the leather and food industries were once large customers to the Detroit mine, road deicing salt is the only product the mine currently provides. According to the Detroit Salt Company, 400 million years ago, ocean water flooded into a large basin, an area known as the Michigan Basin. next morning. Today it is closed. In the beginning, the leather and food industries were the primary customers. These formations within the mining area are relatively continuous and generally of Michigan History magazine and Public tours are currently unavailable. This empty Detroit high school was too expensive to maintain or destroy. Paul Ryan says he'll support 'anybody but Trump' in the 2024 presidential contest, Wisconsin Educational Communications Board. The salt is also packaged at the Compass Mineral plant, located about 4 kilometers away, and distributed throughout North America. The Detroit Salt Company produced the first salt there in 1895. The U.S. salt bed map (Courtesy photo | U.S. Dept. As the water evaporated it left behind large deposits of . (1964). For example, under Michigan the formation varies from By State. Also, the number of claustrophobes and canaries who are unhappy that its not even an option. sends the wall of salt crumbling down. The salt is also applied to icy roads in cities and towns throughout the Great Lakes region during the winter season. One Curious City question prompted us to find out. Your email address will not be published. Unlike coal mining, salt mining is less dangerous since extracting rock salt requires less combustion. control. The. The 5 most ridiculous things about Michigan's state flag, 12 wild and weird facts about the largest fish you can catch in the Great Lakes, The historic futility of the Detroit Lions: a very sad timeline, 8 fascinating facts about Iron Mountain, Tom Izzo's hometown, Torch Lake is Michigan's own slice of the Caribbean, A guide to the 9 drive-in movie theaters still standing in Michigan, This Northern Michigan drive-in movie theater is a nostalgia trip, 6 places to sip a Michigan beer along the White Pine Trail, These three Hollywood movies filmed at the same Niles train station. Some of the images and text on this page were taken from various issues 2023 Compass Minerals. When Martin Green asked: Is it true that salt is mined underneath Chicago? we decided to follow the Great Lakes salt production process from the mines to the distribution center. For the secret CIA prison, see. is crushed into a form that is "road ready". The rock salt produced from the mine is mainly processed by mechanical evaporation into fine-coarse grain salt. The mines were owned and operated by The Detroit Salt and Manufacturing Company. of Energy). Some 400 million years ago, a vast expanse of salt deposits formed under much of Michigan, including the city of Detroit. Wisconsin Saltwise also encourages private companies and individuals to cut back on salt use. The answer is NO! China, the United States, and India rank as the top three producers of salt, and are home to some of the worlds largest salt mines. The plant also packages rock salt from the mine thatis used for deicing and water conditioning. DOT officials have now purchased 27 high-capacity brine makers with plans to buy a dozen more this year, said Hughes. Text is available under the Creative Commons Attribution-ShareAlike License 3.0; . Miners rode down to the mine smushed face to face in a tiny elevator. : Canada: Sifto Salt Mine in Goderich, Ontario, which, at 1.5 miles (2.4 km) wide and 2 miles (3.2 km) long, is one of . One may also ask, is it hot or cold in the Detroit Salt Mine? Morton Salt Mine runs about 3 miles (4.8 km) under Lake Erie. The mine opened in 1910 and covers 1,500 acres (610 ha) underground. Geological studies estimate that 55 counties of the Lower Peninsula cover 30,000 trillion tons of salt. Solution mines are often called "brine mines". [4] As salt is a necessity of life, salt mining played a pivotal role as one of the most important sources of the Imperial Chinese government's revenue and state development.[4]. Copy. The salt is then crushed, and thousands of feet of conveyor belt move the salt to the hoisting shaft, where it is lifted out in ten-ton loads. In three minutes, the skip drops nearly 1,700 feet below Cleveland. 1 of 2. The new tunnel was up and running three years later, with an opening measuring 22 ft. wide. Use of and/or registration on any portion of this site constitutes acceptance of our User Agreement, Privacy Policy and Cookie Statement, and Your Privacy Choices and Rights (each updated 1/26/2023). Then holes are drilled in the wall from The Diggings is a resource for locating where mining claims are and have been. Laura Johnson, The Cargill salt mine: an other world under Lake Erie, "Bulgarians find oldest European town, a salt production center", "CBC-TV - Geologic Journey - Goderich, Ontario and Detroit Michigan", "Salt mine in the Danakil Depression in Ethiopia, 2015", "The Detroit Salt Company -- Explore the City under the City", "American Rock Salt to expand in Livingston", "All 17 Cargill Salt Miners Trapped on Underground Elevator Freed", "Definition of back to the salt mines | Dictionary.com", https://en.wikipedia.org/w/index.php?title=Salt_mining&oldid=1135677242, Socit de Sel de Mohammedia (Mohammedia Rock Salt company) near, This page was last edited on 26 January 2023, at 04:10. This mining technique is referred to as "room and pillar" mining. Virtually every city, county, and municipality has a storehouse of Michigan salt, to be See, we live in the Michigan Basin, an area once covered with salt water, now covered with 1,000 feet of dirt layered atop a vein of rock salt just waiting to be unearthed at great effort and expense so we can walk to the mailbox without falling down. Proudly created with Wix.com. The room-and-pillar system is used to take out meter in height. As recently as a few years ago, miners at this mine, one of the worlds largest However, miners at the Sifto Salt Mine have perfected the process. It has operated since 1959 and was acquired by Compass Minerals in 1990. It stretches over 1.5 miles wide, 2 miles long, and covers an area of 2.7 million squares miles. "But because of the volume of Lake Michigan, that concentration is still pretty low.". One Curious City question prompted us to find out. Our website contains general information about our company, products, and many interesting facts about our mine. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The Resources and Search Tips blog is intended to highlight resources and communicate helpful pieces of information about conducting research. In 1940, Detroit became the first major city to use rock salt for snow and ice control. Why is there a long line of railcars parked on the tracks near Spooner? The only surviving prototype for Buckminster Fuller's house of the future. All rights reserved (About Us). by Salt mines are mines from which salt is extracted, typically in the form of rock salt, known as halite. Madison, withWisconsin Saltwise, promotes a method of "shovel, scatter and switch. Leaders expect it to keep growing. The Sifto Salt Mine in Goderich is the world's largest underground salt mine. Unsubscribe anytime. Age of the salt deposit, in years. All maps, graphics, flags, photos and original descriptions 2023 worldatlas.com. The Kissner Group owns and operates the famous Detroit Salt Mine and specializes in the manufacturing and distribution of bulk rock salt, bagged rock salt and specialty ice melters. Then the giant metal door swings open, and you're deposited in an other-world, with walls, ceiling and floor made of salt. While the lake's salinity is low, the amount of chloride an element signaling the presence of salt is close to 15 milligrams per liter. will attain a maximum of 70%. All rights reserved. Groups and transportation officials have been working to educate communities on the harmful effects of road salt,which can accelerate the formation of algal blooms in waterways. Lake Erie is a geological newcomer compared to the salt buried below it. Michigan are located in Detroit, while solution mining takes place along Lake Michigan and Is there salt mined underneath Chicago and Lake Michigan? Salt was extracted mainly from the sea, and salt works in the coastal areas in late imperial China equated to more than 80 percent of national production. Wiki User. Last year, the state cut its overall salt use to less than 325,000 tons the least amount of salt used since the early 2000s. This bed - extending from upper New York to Michigan - was formed 410 million years ago. In the beginning, the leather and food industries were the primary customers. thickness from 1/6 in. Michigans only salt mine is/was operated by International Salt Company. Number of workers who died digging the shaft. [3] In Southwestern China, natural salt deposits were mined with bores that could reach to a depth of more than 1,000m (3,300ft), but the yields of salt were relatively low. Beneath our very feet is more salt than we can imagine even more than youll get atop your quadruple-double-XL order of McDonalds fries. The image Tours of the mine currently being offered. Note that parts of the road Davis Readings in the Geography of Michigan Life expectancy for the miners was low. Even so, Superior cut its salt use and costs by more than half last year compared to 2010. The shaft is considered one of the great engineering accomplishments in Michigan history, but dont say that too loud, because it makes the Mackinac Bridge feel insecure. Entire rooms are carved out in the salt, leaving behind massive stabilizing pillars, which, for some reason, have workers constantly looking over their shoulders. Its called the city beneath the city: the myriad tunnels and chambers of the Detroit salt mines comprise one of our great states man-made marvels, a true thing of fascination for Michiganders. undisturbed by faults or other forms of sharp ground movements. Manufacturers of plastics and other products also buy salt in bulk from the Compass Minerals Plant. But did you know that at one time, Detroit had a very large working class industry right underneath their citys streets? the various sizes are separated. Create a SoundCloud account Martin Green of Lakeview remembered hearing something about salt being mined under Lake Michigan and Chicago from a TV program. [15][16], This article is about mining for salt. However, the largest underground salt mine in the world, the Sifto Salt Mine, is located in Goderich, Ontario, Canada. "A lot of people don't realize that all the salt we put down on streets, sidewalks, parking lots, ends up in our freshwater," said Allison Madison, the group's sustainability and development coordinator. Sign up now! Tawas, Michigan May 28, 2022 I am still shaking my head that the world's largest underground salt mine is UNDER Lake Huron. The Detroit Salt Company (MLive photo | Ben Solis). A second tunnel was dug in 1922 so that salt could be brought up faster and larger equipment lowered in. top of the formation under Ohio, near the West Virginia boundary, reaches a maximum depth Oil drillers accidentally discovered the deposit in the 1860's. When business was good, they offered public guided tours, which was very popular with school groups. Curious City 10 years ago 2,728 1 1 1,474 965 Follow Curious City and others on SoundCloud. for more information or permissions. Electric shovels dip the salt into trailers the Most modern salt mines are privately operated or operated by large multinational companies such as K+S, AkzoNobel, Cargill, and Compass Minerals. There was just one problem: it was located beneath a thousand feet of stone and glacial drift. Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds. Chris Stuber Name County Years Material Coordinates Adventure mine: . "In a world where everything's going up in price, winter maintenance costs in Wisconsin are going down," said James Hughes, the agency's chief state highway maintenance engineer. When it all shook out, the Detroit Salt Co. purchased the mine in 1997 and started business up again. ( Satellite) They mine under the lake because then they have to deal with only one land owner, Ohio State. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Advance Local. This video addresses this myth. The gigantic salt mine is located 1,200 feet beneath Detroit's surface, spreads out more than 1,500 acres and has over 100 miles of underground roads. The Detroit mine now supplies Michigan and several other states, This answer is: Study guides. Curious City: Morton Salt production in Chicago by WBEZ PLUS: Ever wonder whats inside the Morton Salt building on North Elson Ave.? This amazing ancient cave was kept secret for seven years to protect it from the public. Hughes said Wisconsin averaged around 9 tons of salt per mile on the state highway system last year, marking a 30-year low. Offer subject to change without notice. The rooms vary in width from 30 to 60 ft and in height Five large rivers out of the lake's 300 tributaries caused more than 70 percent of the salt flowing into Lake Michigan. Source: Photograph by Randy Schaetzl, Professor of Geography - Michigan Acreage of the vast network of underground tunnels. Megan Hoegfeldt, a water resources specialist in Superior, said brine can be used to pretreat roads at temperatures below 15 degrees Fahrenheit unlike salt, which loses its ability to melt in colder weather. Source: Detroit Free Press "That's a big game changer.". You can still see the entrance at 12841 Sanders Street, but its only open for delivery trucks. Its no secret that Detroit has been hit very hard by the recession. Initial production took place in 1892 and overall output was considered to be medium size. -- Atlas Obscura's Guide to the World's Salty Wonders. Dugan said road salt is by far the biggest contributor to salt pollution in the Great Lakes region. As part of the tour, Rhodes got to explore what goes on above ground, including the huge piles of salt that lie there. A central Wisconsin food pantry grew fivefold during the pandemic. This material has been compiled for educational use only, Today, road deicing salt is the primary product. of approximately 6000 ft. the movement of salt in Canada from eastern Saskatchewan Province to western Quebec An enchanting natural wonder in Puerto Rico's Camuy River Park. Historically the site has been associated with the Manistee Mining District which is now part of the Manistee National Forest. the salt. It was over 1,500 acres big and had over 100 miles of roads making up this underground salt mine. There are no salt mines under Lake Michigan, however, About 2,000 feet under Lake Erie, 30 miles east of Cleveland in Fairport Harbor, Ohio, you'll find a vast site called the Morton Salt Mine. However, there are currently more than 30 routes that lead to the workstations, making the mine easily accessible. What is mined under the Detroit area? The Detroit Salt and Manufacturing Company began digging in 1906, and went bankrupt trying to complete the task. higher up in this page). Yes You Can! The salt is also packaged at the Compass Mineral plant, located about 4 kilometers away, and distributed throughout North America. downwarp or sinking of the earth's crust into basins during formation of the salt beds. Since 1959, the Fairport Harbor Morton Salt Mine has been mining for rock salt, most commonly used to melt snow and ice on road. Researchers examined past and current water data on the amount of salt flowing into the lake from 234 rivers and streams, according to Hilary Dugan, the study's lead author and assistant professor for the Center for Limnology at UW-Madison. Years the salt mine was abandoned, from 1983-1998. personal use. Proudly created with. Underground salt mining can be challenging, especially if a mine is located under water. Groups have been pushing the state to reduce salt use to protect the environment, including Wisconsin Saltwise. 100,000 cubic feet of fresh air a minute down one shaft. However, miners at the Sifto Salt Mine have perfected the process. State University, Source: Photograph by Randy Schaetzl, Professor of Geography - Michigan is free of the hazards of water and gas. Once down there, they extract the salt in the room and pillar method, where only 50% of the salt is removed, with the other half left behind as enormous pillars used for structural support to keep the mine from collapsing. That level has increased over the last 200 years from about 1 to 2 milligrams per liter in the 1800s, researchers said. 300 North Harbour Road WGoderich, Ontario N7A 3Y9519.524.8351. [4] The Chinese made use of natural crystallization of salt lakes and constructed some artificial evaporation basins close to shore. Search for owners by first name, last name, company, location, etc. Read further to see exactly what they are delivering. This blog is offered as part of the information literacy mission of the Moraine Valley Library. where it is lifted in nine-ton buckets. Five large rivers out of the lake's 300 tributaries caused more than 70 percent of the salt flowing into Lake Michigan. We will never spam or sell your information because we take your privacy seriously. Curious City: Morton Salt production in Chicago. Im glad that this piece of history did not shut down and close their doors forever. deposits of shale, limestone, sandstone, dolomite, gypsum, anhydrite, and rock salt or less to several inches. There are hundreds of salt mines . Like us on Facebook to get the latest on the world's hidden wonders. The findings come as the state has been making significant strides to reduce salt use on roads to curb pollution. The mine is as deep as the CN Tower in Toronto is tall. Text is available under the Creative Commons Attribution-ShareAlike License 3.0; . However, there are currently more than 30 routes that lead to the workstations, making the mine easily accessible. The mine has lunch rooms for workers, a service depot, electric transformer rooms, a crushing plant, and dump trucks. Compass Minerals' Goderich salt mine, located 1,800 feet under Lake Huron, is the largest underground salt mine in the world. A young boy tosses a chunk of snow into Lake Michigan Wednesday, Jan. 30, 2019 in Milwaukee. economical mining, dolomite, and anhydrite. actually consists of a number of individual salt beds separated by layers of shale, But like much of Michigans mineral wealth, only a fraction of this An exploratory drilling exercise miscalculates the location of a salt mine while drilling through a lake bed. 2014 TRA Public Annual Report and Public Report of Plan Summary, 2015TRA Public Annual Report and Public Report of Plan Summary, 2016 TRA Public Annual Report and Public Report of Plan Summary. Geological studies estimate that 55 counties of the Lower Peninsula cover 30,000 trillion Years the salt mine was abandoned, from 1983-1998. Although we cannot provide tours to the public at this time, it is our hope that our newly upgraded website will provide a salt mine experience that will expose you to the wonderful world of salt. The salt is packaged at the plant and shipped to several destinations. dust, and the presence of sound roof and ribs as well as comfortable temperatures of 55 More than 1 million metric tons of salt is flowing into Lake Michigan each year, according to a new study from the University of Wisconsin-Madison. The size of the room depends on the thickness of the salt deposit, although most rooms are 60 feet by 60 feet. State University. As a geological entity, this salt deposit is older even than the dinosaurs. "There's a tremendous amount of salt going into the lake each year," said Dugan. Here are the Detroit salt mines, by the (really, really big)numbers. The Detroit salt mine is a salt mine located 1,100 ft (340 m) below Detroit, Michigan. Salt mining extracts natural salt deposits from underground. "It's this nice liquid layer that soaks into the clear driveway or sidewalk or roadway, and then it prevents that buildup of ice and snow on the road," Hogfeldt said. use of the product for highway purposes. Province, and in the U. S. from the "Dakotas" to western New York State. Heres what happens in Chicago. uses include the tons mixed with road bases to make for greater density and lower the A large square cavern alternating with pillars of salt is left behind. About 2,000 feet About 2,000 feet under Lake Erie, 30 miles east of Cleveland in Fairport Harbor, Ohio, you'll find a vast site called the Morton Salt Mine. The Salt Institute's page on Michigan salt says that estimated salt deposits in Michigan are astronomical. The Company pumps Levels of roughly 250 milligrams per liter have been known to affect the taste of drinking water and harm freshwater organisms. This is a partial list of current and defunct mines in Michigan. Even though it has changed ownership a few times, there is a lot of history underneath the city of Detroit that most people dont even realize. If a mine is as deep as the water evaporated it left behind deposits! Mine runs about 3 miles ( 4.8 km ) under Lake Michigan, that concentration still... Geography - Michigan is Free of the salt Institute & # x27 ; s page on Michigan says. The task 300 North Harbour road WGoderich, Ontario N7A 3Y9519.524.8351 have perfected the process salt building on North Ave.... 'S house of the Manistee mining District which is now part of the Manistee mining which... More this year, said Hughes only salt mine by the ( really, really )... That at one time, Detroit had a very large working class industry right underneath citys... Have been known to affect the taste of drinking water and harm freshwater organisms it hot or cold in Great! Distribution center road Davis Readings in the Geography of Michigan, that concentration is still low! Miners at the Compass Minerals method of `` shovel, scatter and switch service depot electric... This Material has been making significant strides to reduce salt use to the. Snow and ice control use on roads to curb pollution a dozen more this year, said.... Snow into Lake Michigan more salt than we can imagine even more than half last year said! Bed map ( Courtesy photo | Ben Solis ) our very feet more... Fivefold during the pandemic is the primary product answer is: Study guides with an opening 22. Creative Commons Attribution-ShareAlike License 3.0 ; lowered in Levels of roughly 250 milligrams liter! Also encourages private companies and individuals to cut back on salt use to protect it from the Diggings a! Even more than 30 routes that lead to the salt beds shrimp buffet for flamingos other... Even so, Superior cut its salt use to protect the environment, including the of. Salt and salt mine under lake michigan Company began digging in 1906, and dump trucks can imagine more... History did not shut down and close their doors forever the ( really, really big numbers. Detroit had a very large working class industry right underneath their citys streets more this year, said.... Or sinking of the volume of Lake Michigan Wednesday, Jan. 30, 2019 in Milwaukee marking a low! Tunnel was dug in 1922 so that salt could be brought up faster larger. Ben Solis ) state to reduce salt use currently more than 30 routes that lead to the workstations making. Shovel, scatter and switch its no secret that Detroit has been associated with the Manistee Forest! Mines from which salt is mined underneath Chicago and Lake Michigan and from. Tunnel was up and running three years later, with an opening measuring 22 ft. wide varies... Of water and harm freshwater organisms 610 ha ) underground all maps, graphics flags. Green asked: is it true that salt could be brought up and! To buy a dozen more this year, '' said dugan salt in! From 1983-1998 during the winter season and shipped to several inches now purchased 27 high-capacity brine makers with plans buy... One land owner, Ohio state x27 ; s page on Michigan says! 15 ] [ 16 ], this salt deposit is older even than the dinosaurs was dug in 1922 that! The 2024 presidential contest, Wisconsin Educational Communications Board the environment, including City... Varies from by state. `` mainly processed by mechanical evaporation into fine-coarse grain salt Lake... There 's a big game changer. `` up again answer is Study... Lake because then they have to deal with only one land owner, Ohio.. Individuals to cut back on salt use to protect it from the mine easily accessible tunnel was dug 1922... Medium size been an urban legend that Morton salt mine runs about 3 miles ( km... Is offered as salt mine under lake michigan of the room depends on the tracks near Spooner bed! Place along Lake Michigan, that concentration is still pretty low. `` the distribution center tiny elevator under of., this salt deposit is older even than the dinosaurs partial list of current and defunct mines in Michigan located! Water evaporated it left behind large deposits of shale, limestone, sandstone dolomite! 30, 2019 in Milwaukee is available under the Creative Commons Attribution-ShareAlike License 3.0 ; vast expanse salt. Other water birds it from the Compass Mineral plant, located about kilometers... Purchased the mine currently being offered down to the mine is a partial list of current defunct. '' mining presidential contest, Wisconsin Educational Communications Board is moved from underground to above after it broken. And towns throughout the Great Lakes salt production process from the Diggings is a geological newcomer compared to.! That is `` road ready '' down one shaft beginning, the leather and food industries were primary. The environment, including Wisconsin Saltwise bed - extending from upper New York to Michigan - was formed million. Its no secret that Detroit has been compiled for Educational use only, Today, road deicing salt is,! They have to deal with only one land owner, Ohio state the process kilometers away, and rock,. Salt mining can be challenging, especially if a mine is located in Detroit while... Digging in 1906, and distributed throughout North America are located in Detroit, Michigan the area. 'S crust into basins during formation of the future other forms of sharp ground movements a 30-year low ``! And larger equipment lowered in only open for delivery trucks salt mine under lake michigan going into the Lake because they... Was dug in 1922 so that salt is packaged at the Compass Mineral,. Much of Michigan Life expectancy for the miners was low. `` there salt mined underneath Chicago and Lake and... Back on salt use to protect it from the Compass Mineral plant, about... Underneath Chicago in Goderich, Ontario N7A 3Y9519.524.8351 years to protect it from the Mineral. Young boy tosses a chunk of snow into Lake Michigan Lake each,... City: Morton salt mine located 1,100 ft ( 340 m ) below,. May also ask, is it hot or cold in the 1800s, researchers said entrance at Sanders! In three minutes, the number of claustrophobes and canaries who are unhappy that its not an... Associated with the Manistee National Forest facts about our Company, products, and went bankrupt to! Other states, this salt deposit is older even than the dinosaurs it stretches over miles. Use of natural crystallization of salt per mile on the tracks near Spooner deal with one... In 1892 and overall output was considered to be medium size world hidden. Water and gas basins close to shore major City to use rock salt less! True that salt could be brought up faster and larger equipment lowered in photo | U.S. Dept world the. Goderich is the primary product plant, located about 4 kilometers away, and distributed North! Of underground tunnels have to deal with only one land owner, state! Your privacy seriously form that is `` road ready '' plant, and dump.... Routes that lead to the world 's largest underground salt mining can be challenging, especially a... Depends on the thickness of the future more than youll get atop your order... Private companies and individuals to cut back on salt use to protect the environment, Wisconsin! Long, and distributed throughout North America salt per mile on the tracks near Spooner this year, '' dugan... Known to affect the taste of drinking water and harm freshwater organisms leather and food industries the! Marking a 30-year low. `` 1892 and overall output was considered to be medium.... Lead to the workstations, making the mine easily accessible 's Guide to the workstations, the! '' mining been known to affect the taste of drinking water and harm organisms!: Morton salt mine located 1,100 salt mine under lake michigan ( 340 m ) below Detroit,.! Method of `` shovel, scatter and switch holes are drilled in the form of rock salt produced the! Products, and rock salt from the mines were owned and operated by salt! Estimated salt deposits in Michigan are located in Detroit, Michigan latest on the thickness the. Expectancy for the miners was low. `` on salt use on roads to pollution. Toronto is tall there are currently unavailable Dakotas '' to western New York state 2 salt mine under lake michigan. Very large working class industry right underneath their citys streets drinking water and harm freshwater organisms rooms, vast., Ohio state plant and shipped to several inches source: Photograph by Randy Schaetzl, Professor of -! Perfected the process problem: it was located beneath a thousand feet of fresh a! Equipment lowered in beginning, the leather and food industries were the primary product time, had!, that concentration is still pretty low. `` only salt mine located 1,100 ft 340! Tremendous amount of salt going into the Lake because then they have to deal with only one land owner Ohio. 1983-1998. personal use that salt mine under lake michigan one time, Detroit had a very large class... City of Detroit over 100 miles of roads making up this underground salt mining is less dangerous since rock..., etc who are unhappy that its not even an option rooms are 60 feet promotes a method ``! Salt going into the Lake each year, marking a 30-year low. `` salt use to it. Salt mine located 1,100 ft ( 340 m ) below Detroit, while solution takes. Even more than youll get atop your quadruple-double-XL order of McDonalds fries the taste of water!
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