Thanks Mike,
I don’t know the history very well, but think white LEDs started appearing in 2002 and by 2005, high intensity white LEDs were available. Although wheatlamps are still available from places like eBay, I think they were also replaced by LED versions by the same dates. Regards, John From: Bilbo, Michael J [mailto:mbi...@blm.gov] Sent: Tuesday, April 03, 2012 10:10 AM To: 'john_j_corcoran_...@msn.com'; 'lstarr...@gmail.com'; 's...@caver.net' Subject: Re: [SWR] Fwd: Lincoln Cavern photo John - a thought on the recent history of headlamps - if it is 2004 (or late '90s), that be the basic end-period for wheatlamps, correct? And the shift to LEDs? When did cavers go full bore into LEDs? On the photo date and kneepads, I bought for the Roswell BLM cache in mid '90s about 20 pair of Bomber Gear kneepads (and we also still had 15 functioning wheatlamps then). I also forwarded the photo to Stephen Carter as the central figure bears some resemblance. From: John Corcoran [mailto:john_j_corcoran_...@msn.com] Sent: Monday, April 02, 2012 09:29 PM To: Bilbo, Michael J; lstarr...@gmail.com <lstarr...@gmail.com>; s...@caver.net <s...@caver.net> Subject: RE: [SWR] Fwd: Lincoln Cavern photo Mike, I think the photo is from Peter Jones and could be as far back as 2004. I don’t have Peter’s email address, but asked someone else to check. Regards, John From: swr-boun...@caver.net [mailto:swr-boun...@caver.net] On Behalf Of Bilbo, Michael J Sent: Monday, April 02, 2012 11:17 AM To: 'lstarr...@gmail.com'; 's...@caver.net' Subject: Re: [SWR] Fwd: Lincoln Cavern photo I-ve seen that photo before and think it was mineralogy or DNA HIB trip from 2008-2010 but can't I'd anyone via the Blackberry screen. On Wednesday or Thursday I'll be able to look at permits to find the last Lincoln trips. John Corcoran - can you do a search through FSCSP reports to see when the last Lincoln trips were? Diana Northup -could you do same? My recollection of late period pre-moratorium was a DNA HIB trip. From: Linda Starr [mailto:lstarr...@gmail.com] Sent: Monday, April 02, 2012 12:09 AM To: Southwestern Region <s...@caver.net> Subject: [SWR] Fwd: Lincoln Cavern photo Hi All, This photo is being used in the Lincoln Caverns Discovery story written by Lee Skinner for the 50th Anniversary Memoir booklet. Does anyone out there recognize this photo and know who the people are and what year this was taken? Let me know if you know anything about it. Linda Starr
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