Labs will use the ASTM D792, ASTM D1505, or ISO 1183 to determine specific gravity. Samples ship in July and October.

Labs will use the ASTM D6869, ASTM D6980, ASTM D7191, or ISO 15512 (Method B) to determine moisture content. Samples ship in July and October.

Labs will use the ASTM Test Method D5630 to determine ash content. Samples ship in July and October.

Labs will use the ASTM Test Method D1894 to determine static and kinetic friction. Samples ship in July and October.