Search U.S. government technical reports digitized or harvested by TRAIL.
Strontium from a domestic standpoint
Gypsum :its uses and preparation
Ocher and Ochery Earths
Marketing of gypsum products
Development of the gypsum industry by states
The Canadian Gypsum Industry
Barite and barium products.
Selenium and tellurium
Monazite, thorium, and cerium
Caesium, rubidium, and lithium
Quartz and silica.
Umber, sienna, and other brown earth pigments
Platinum
Boron and its compounds
Mining laws of Bulgaria
Mining laws of Madagascar
Mining laws of Tunisia