Historical
ASTM D7430-12b
Standard Practice for Mechanical Sampling of Coal
1.1 This practice is divided into 4 parts. These 4 parts represent the previous standards D7256/D7256M, D4916, D4702, andD6518. These 4 standards are the 4 that govern the mechanical sampling of coal and have been combined into one document for the ease of reference of the users of these standards.
ASTM International [astm]