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Anything with a battery is Verboten in a coalmine, even a wrist watch. One of the few exception is the sealed / gas proof, miner lamp. John Cornwall, whose books of mining photos are well known, used an "Engineers' Mining Lamp". A seach light, connected to heavy duty nickel alkaline battery. Heavy being a good description. Using a time exposure he managed to light up long headings, etc. Cheers - Tony Oldham Duncavin 1 Riverside Mews CARDIGAN SA43 1DH http://www.sat.dundee.ac.uk/~arb/speleo/guides.html http://www.showcaves.com http://www.mike.munro.cwc.net/mining/tony_o/tonyo_hp.htm http://tunneling.irational.org/united_kingdom/ludchurch/ >From: Keith Ramsey <[log in to unmask]> >Reply-To: "The mining-history list." <[log in to unmask]> >To: [log in to unmask] >Subject: Re: Mining Photography >Date: Mon, 16 Feb 2004 13:16:37 -0000 > >Thanks to everyone who replied to this. What I was really looking for was a >textbook of mining photography, with particular reference to coal mines, >but >I guess that there's not much demand for that sort of thing these days, at >least in this country. > >Following on from James's point about flameproof digicams, what are the >rules about using flash in a coal mine? I assume that it would be totally >forbidden, but what about cameras that need a battery to work the shutter? >Are only totally mechanical cameras allowed, or could something with >electrics be safely enclosed in a housing designed for underwater >photography? > >Keith Ramsey _________________________________________________________________ Express yourself with cool new emoticons http://www.msn.co.uk/specials/myemo