Hydro-mining machine sluicing coal at Pike River mine
A photograph of the hydro-mining machine sluicing coal with jets of high-pressure water. Methane levels increased suddenly when this machine began working at the Pike River mine in September 2010, regularly reaching explosive levels.
'Hydro-mining machine sluicing coal at Pike River mine', URL: https://nzhistory.govt.nz/media/photo/hydromining-machine-sluicing-coal, (Ministry for Culture and Heritage), updated 17-Nov-2015
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