The Minnesota Pollution Control Agency (MPCA) says statewide about 404,000 tons of road salt are used every year.

In response to Craig Bettenhausen’s business Concentrates piece on the US Environmental Protection Agency’s Safer Choice labeling, I would like to point out other problems with this designation. I am ...

chemical, manufacturing, electronics, energy production, medical, food, and metals. It also designs and manufactures equipment for air separation, hydrocarbon recovery and purification ...

For example, the formula H 2 O shows that a water molecule contains two hydrogen atoms and one oxygen atom.