Someone else mentioned the Historical Metallurgy Society Archaeology  
Datasheets. These are available as free doenloads at:
http://hist-met.org/ad_index.shtml

No 1 Crucibles and moulds

No 2 Precious metal refining

No 3 Iron working processes

No 4 Geophysical techniques applied to early metalworking sites

No 5 Bloomery iron smelting, slags and other residues

No 6 Bloom Refining and Smithing, slags and other residues

No 8 Currency Bars and other forms of trade iron

No 9 Excavation and sampling

No 10 Hammerscale

No 11 Metallographic examination

No 12 Chemical analysis of metalwork and metalworking debris

No 14 X-radiography and archaeometallurgy

No 15 The care and curation of metallurgical samplesnd other residues

No 16 Metalworking evidence and the management of archaeological sites

A lot of this information was incorporated into the CFA Guidelines  
available from English Heritage as a PDF download.

James Brothers, RPA
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