Production of Isotopes. The most critical materials required for nuclear weapons are special isotopes of particular elements. Some of these isotopes ...

Chapter 62 Minerals and Agricultural Chemicals MINERALS* *Adapted from 3rd edition, Encyclopaedia of Occupational Health and Safety. Revision includes ...

This page contains a numerical NAICS code list 2017. Users can view and lookup an index of 2017 NAICS codes in numerical order.

Potassium is a chemical element with symbol K (from NeoLatin kalium) and atomic number 19. It was first isolated from potash, the ashes of plants, from ...