Thanks but had already most of the links you'd posted except:
Imperial Chemical Industries (ICI) of the United Kingdom, who had been major manufacturers of explosives with the NOBEL trade mark and following Nobel’s patents for Gelignite, supplied explosives to the New Zealand mining, quarrying and tunnelling activities and bought control of CAC in about 1960. The General Manager of ICI explosives in New Zealand was Dick Hazard, no doubt related to the CAC founder WH Hazard.
So by all means, please continue to bore me shitless...
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