It is known that calcined gypsum, after being moistened with a solution of alum and again burnt, acquires much greater hardness and solidity. Another process is to make a solution of one pound of ...
12don MSN
Just why the Romans did this, though, remains a mystery. The experts that made the discovery found that the natural ...
Today, as Franklin did then, farmers use gypsum to improve soil tilth, water infiltration and nitrogen uptake in their fields. According to the American Coal Ash Association, a utility industry ...
OTTAWA COUNTY, Ohio — Ohio Attorney General Dave Yost announced Tuesday that he's suing a gypsum mining company for nearly $17 million for "failure to maintain" underground mines that led to ...
Results that may be inaccessible to you are currently showing.
Hide inaccessible results
Feedback