Alabaster Description Alabaster is a name applied to varieties of two distinct minerals, when used as a material: gypsum (a…

Aggregates Description Construction aggregate, or simply “aggregate”, is a broad category of coarse particulate material used in construction, including sand,…

Acid Clay : Bleaching Earth Description Clay soil such as Acid Clay, Activated Earth and Fuller’s earth. Bleaching earth includes…

Lead Description / Application Most ores contain less than 10% lead, and ores containing as little as 3% lead can…

Oil Well Casing Description Casing is large diameter pipe that is assembled and inserted into a recently drilled section of…