() A weight of 29.166 + grams used in assaying, for convenience. Since it bears the same relation to the milligram that a ton of 2000 avoirdupois pounds does to the troy ounce, the weight in milligrams of precious metal obtained from an assay ton of ore gives directly the number of ounces to the ton.
ASSAY TON
Meaning of ASSAY TON in English
Webster's English dictionary. Английский словарь Webster. 2012