Returns JH's book. Describes alloy of gold and silver. Copper-iridium alloy would work, but it would influence assays adversely. Procedure for separating gold and iridium.
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Returns JH's book. Describes alloy of gold and silver. Copper-iridium alloy would work, but it would influence assays adversely. Procedure for separating gold and iridium.
Withdraws RM's request for leave. Complains of noxious fumes in Melting room and from nearby refinery. Objects to frequent changes in RM's assistants; none remain long enough to learn Melting room procedures. Recent loss of Mr. Aberdein.
Procedures for separating gold from silver and iridium by subsidence. Encloses volume of experiments by Charles Hatchett.
Frequent change in RM's chief assistants is unfortunate, but junior officers must rotate in order to learn duties in every branch of Mint.
Deliver bars produced today to Mr. Hill, who will commence work immediately in anticipation of assay.