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 ...

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 ...

In PJD’s multifamily component of the business, they install gypsum underlayment and use a pump to move the material where it needs to be – running the job safer, saving time, and avoiding a ...

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 ...