Limestone Quarry Workers 2 by Tom Duffy
Indiana Limestone Workers 2A by Tom Duffy
Limestone Quarry Workers 3 by Tom Duffy
Limestone Quarry by Tom Duffy
Limestone - The Final Cut by Tom Duffy
Limestone Quarry Workers 1 by Tom Duffy
Dropping a Wall of Limestone by Tom Duffy
Planning the Limestone by Tom Duffy