Despite the preponderance of gold-mining and railway-themed illustrations that appear on this site, I have been known to draw other things, especially aircraft. Herewith an example.
ON-MARK B-26K ‘INVADER‘
‘A ‘CALIFORNIAN’ TYPE 5-STAMP BATTERY AS USED ON N.Z. GOLDFIELDS’.
In most of the Coromandel Peninsula’s batteries (reduction-works), the stamper battery was the key to success. The battery invariably operated in groups of five (as illustrated).* Heavy weights (the ‘Stamps’), operating in a pre-programmed sequence and set at the optimum height for the purpose, crushed the gold-bearing quartz-rock to talcum-powder fineness, releasing the gold there-in for further chemical processing.
* Confusingly, in Australasia, the term ‘Battery’ was / is used to describe both the crushing machinery (as illustrated), and the building / site where these machines were located.