Assaying is the process used to determine the quantity of
a particular metal in an ore or alloy. The department highly
recommends analysis of samples by the fire assay method to
determine precious metal content.
Because of documented Public Land administration problems caused
by inaccurate or nonreproducible precious metal assays, the
Bureau of Land Management's (BLM) Washington Office assigned
the National Training Center in Phoenix to develop and implement
a scientific survey of assay laboratory results.
Some links on our pages lead to documents that
are in PDF format and require
Adobe's free Acrobat Reader. You can
download Acrobat Reader here from Adobe.
