Re: cement and other minerals


Tim O'Connor
 

There's an incredible amount of online stuff about mineral production
in the US, including this huge archive

http://digicoll.library.wisc.edu/cgi-bin/EcoNatRes/EcoNatRes-idx?type=turn&entity=EcoNatRes005608670014&isize=XL

The above page shows that in 1960, 10 states had no cement plants
at all, and most production came from Michigan, Pennsylvania, Texas
and California. The 10 states: Alaska, Nevada, North Dakota, Vermont,
Massachusetts, Rhode Island, Connecticut, New Hampshire, Delaware
and New Jersey.

Asbestos production held steady at about 1,000,000 tons a year in
the 25 years following WWII... I wonder if it was shipped in covered
hoppers?

Tim O'Connor

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