Tyrone Mine, NM (# 0792) Silver City, NM / Chino mine (#0 800) Santa Rita, NM Chino Mine (# 0803) Santa Rita, NM Chino Mine (# 0809) Santa Rita, NM Chino Mine (# 0806) Santa Rita, NM Chino Mine (# 0810) Ludlow, CO labor monument (# 0038) Ludlow, CO labor monument (# 0039) Ludlow, CO labor monument (# 0041) Ludlow, CO labor monument (# 0043) Ludlow, CO labor monument (# 0044) Ludlow, CO labor monument (# 0046) Cokedale Historic Dist, CO slag pile (# 0055) Cokedale Historic Dist, CO miner memorial (# 0055… Cokedale Historic Dist, CO coking ovens (# 0062) Cokedale Historic Dist, CO wash plant (# 0063) Cokedale Historic Dist, CO slag pile (# 0064) New Elk Coal Co (# 0065) New Elk Coal Co (# 0066) US 550 Red Mountain Project (# 0298) US 550 Red Mountain Project (# 0299) US 550 Red Mountain Project (# 0300) US 550 Red Mountain Project (# 0301) US 550 Red Mountain Project (# 0304) US 550 Red Mountain Project (# 0306) US 550 Red Mountain Project (# 0309) US 550 Red Mountains (# 0312) Clarkdale, AZ copper history (# 0491) Clarkdale, AZ copper history (# 0490) Clarkdale, AZ copper history (# 0493) Tyrone Mine, NM reclamation (# 0789) Osceola, NV (#1247) Osceola, NV (#1246) Osceola, NV (#1245) Ward Charcoal Ovens (#0619) Ward Charcoal Ovens (#0618) Ward Charcoal Ovens circa 1995 Utah US-191 oil (#0065) Flaming Gorge Simplot phosphate mine UT (#0063) Flaming Gorge Simplot phosphate mine UT (#0064) Flaming Gorge Simplot phosphate mine UT (#0061) Flaming Gorge Simplot phosphate mine UT (#0057) Flaming Gorge Simplot phosphate mine UT (#0058) Flaming Gorge Simplot phosphate mine UT (#0056) Flaming Gorge Simplot phosphate mine UT (#0052) South Pass City WY Carissa Mine (#0015) South Pass City WY Carissa Mine (#0014) South Pass City WY Carissa Mine (#0012) Atlantic City WY Duncan Mine (#0009) Atlantic City WY (#0008) Atlantic City WY (#0006) Atlantic City WY (#0005) Berlin-Ichthyosaur State Park, NV (0745) Berlin-Ichthyosaur State Park, NV (0744) Berlin-Ichthyosaur State Park, NV (0743) Berlin-Ichthyosaur State Park, NV (0742) Berlin-Ichthyosaur State Park, NV (0739) Berlin-Ichthyosaur State Park, NV (0738) Berlin-Ichthyosaur State Park, NV (0734) Berlin-Ichthyosaur State Park, NV (0732) Berlin-Ichthyosaur State Park, NV (0730) Berlin-Ichthyosaur State Park, NV (0728) Berlin-Ichthyosaur State Park, NV (0725) Berlin-Ichthyosaur State Park, NV (0724) Berlin-Ichthyosaur State Park, NV (0723) Berlin-Ichthyosaur State Park, NV (0721) Berlin-Ichthyosaur State Park, NV (0719) Berlin-Ichthyosaur State Park, NV (0716) Berlin-Ichthyosaur State Park, NV (0715) Berlin-Ichthyosaur State Park, NV (0712) Berlin-Ichthyosaur State Park, NV (0714) Berlin-Ichthyosaur State Park, NV (0711) Berlin-Ichthyosaur State Park, NV (0708) Berlin-Ichthyosaur State Park, NV (0706) Berlin-Ichthyosaur State Park, NV (0705) Gabbs, NV mine (0695) Trona CA (0630) Trona CA "Bonanza Borax" mural (0622) Trona CA "Bonanza Borax" detail (0622) Trona Railway museum (0624) Trona Railway (0620) Trona Railway (0619) Trona CA Searles Valley Minerals (0616) Trona CA monorail (0609) Trona, CA (0333) Palmetto, NV (0070) Palmetto, NV (0062) Palmetto, NV (0064) Palmetto, NV (0059) Palmetto, NV (0055) Palmetto, NV (0056) Gold Point, NV (0054)