Proposed limestone mining like a Parley’s Canyon mine would harm air quality, watersheds and the beauty of the Wasatch, but ...

While there are several differences between the two, the key difference between limestone and gravel is their compositions.

The limestone would be produced using sequestered carbon dioxide. With Blue Planet's proprietary technology and Knife River providing expertise in construction aggregates, the companies are ...

U.S. Rep. Mike Kelly of Butler, R-16th Dist., and Democratic U.S. Sens. Bob Casey and John Fetterman of Pennsylvania ...

Many minerals, aggregates and sands are used as fillers and extenders in other compounds because they are chemically inert. Mineral powder such as mica or slate is used in paints, resins, and plastics ...