Did you know- Detroit has/had an underground salt mine 1,200 feet down

[packman]

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"Detroit’s salt mines are like an underground city within the city. It is a massive expanse of 1,500 acres and over 100 miles of roads right under everyone’s feet. It stretches from Dearborn, located in the northwest of Detroit’s metropolitan area, and known to automobile lovers as Henry Ford’s birthplace, via Melvindale to Allen Park in the southwest."

Operated until 1983 - quite remarkable. More info and pixs at:

http://leenks.com/link512025.html

[Art_from_Ark]

1. A typical example of the room-and-pillar mining method

that is/was commonly used in salt mines in Michigan, Ohio, and Ontario.

[MrScorpio]

2. Yes, I did.

As did all of our cars.

[packman]

3. You mean you didn't pay to have that $200+ undercoating done?

I grew up in the Pittsburgh area and am extremely familiar with salt being used on roads. And what a rip-off, buy a new car and pay for that "extra" protection of sprayed on tar coating on the bottom of your car to (laugh-laugh) protect your car from salt corrosion.