San Antonio Express Those solids include mostly the bits of rock formations that have been drilled through, but there are also salts or metals such as barium, chromium , lead, mercury, selenium, silver and zinc. And it all has to go somewhere, often a landfill. Other times ...
Sun-Sentinel Calcium carbonate . The least expensive form of calcium to manufacture, calcium carbonate requires lots of stomach acid to digest, so very little calcium goes to your bones, where needed. Because it stays in the gut, you will find this compound also ... and more »
LiveScience.com Cobalt, along with chromium and tungsten make up stellite alloys that create high-speed, heavy-duty, high-temperature cutting tools and dies. Cobalt salts produce a brilliant and permanent blue color, called cobalt blue. The pigment is used in ...
