73.060 Ore minerals and their concentrates

Zink concentrates. Atomic absorption method for determination of arsenic

Zinc concentrates. Spectrophotometric method of silicon dioxide content determination

Potassium salts. Sylvinite ore. General technical requirements

Rare metal ores of the crandallite-monazite type are commercial unrefined. Technical conditions

Ores complex tin-polymetallic commercial unenriched. Technical conditions

Extraction of precious metals

Labour safety standard system. Preparation of metallurgical raw materials. Aspiration. Method of analysis of the performance of local exhaust hiding places overloads bulk materials.