Ruby Gemstones on Rock

989 × 742

Yellow Mining Truck — Industrial, Afternoon, Photograph

1600 × 1000

Miners in a Tunnel — Black

1229 × 1124

Open-pit Coal Mine

1920 × 1039

black rock mineral specimen

1280 × 960

Mining Drill Machine

3072 × 2304

Blackhall Colliery from North

1456 × 960

Blackhall Colliery 1980

1027 × 756

Giant Mining Excavator — Brown, Industrial, Afternoon, Photograph, Bulldozer

1366 × 768

Giant Mining Excavator — Brown, Industrial

1500 × 1000

coal worker shoveling coal

1080 × 1402

Industrial coal yard with train tracks

1500 × 1991