ME551/GEO551 Geology of Industrial Minerals Spring 2007 Commodities, Part 4 Magnesium, Perlite, nitrogen, phosphate, potash, salt, pumice.
Every year > 25,000 pounds (11.3 metric tons) of new non-fuel minerals must be provided for you, and each person in the US, to make the items that we use.
NURSERY PLANT PROPAGATION. Nursery Propagation Practices Why use propagation? More control of production & growth Improved disease resistance
Igneous Rocks. Granite is a very hard rock. It does NOT weather easily. It is mined from granite quarries.