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Brian Maffly | The Salt Lake Tribune Mike Sheehan, a BLM archaeologist, describes ancient petroglyphs at Utah's Lake Mountains Brian Maffly | The Salt Lake Tribune Mike Sheehan, a BLM archaeologist, describes ancient petroglyphs at Utah's Lake Mountains Brian Maffly | The Salt Lake Tribune BLMÌs Teresa Rigby displays slugs that have struck rock art panels at UtahÌs Lake Mount Brian Maffly | The Salt Lake Tribune Signs are preferred targets at Utahís Lake Mountains where problems associated with shoo Brian Maffly | The Salt Lake Tribune A man, who identified himself as Tony, takes aim at paper targets with a 9mm handgun on p Brian Maffly | The Salt Lake Tribune Shotgun casings litter a shooting area at Utah's Lake Mountains, where the BLM has began