jan 1, 1537 - black work
Description:
In lead-mining this was waste material and it occurs first in an account of slag that was being reworked. 1427 <i>antiquum slagwerk ... blakwerk a bolisted usque smelting place</i>, Weardale (R&J76); 1527 <i>nor also of the blake warke</i>, Bishopside (YRS140/194); 1537 <i>saving to me & myn executors the oore leade and black warke at the same</i>, Derbyshire (SS116/101). In the fur trade ‘blackwerk’ was the skin of squirrels taken in winter from Central Europe, where the back is dark grey, almost black (EMV225).
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