A small CO2 canister will blast compressed air over the camera cleaning it,, my take is water N air hoses should be installed all through the mines in advance for survivors ,probably are ,,we need to think maybe about installing a man size pipe line through tunnels as a crawling escape route ,with accesses all along the way ,Best wishes to the loved ones !! Sherrie
A small CO2 canister will blast compressed air over the camera cleaning it,, my take is water N air hoses should be installed all through the mines in advance for survivors ,probably are ,,we need to think maybe about installing a man size pipe line through tunnels as a crawling escape route ,with accesses all along the way ,Best wishes to the loved ones !! Sherrie
JustRobots 3 years ago