Profitability and occupational injuries in U.S. underground coal mines
Hexapod robot for humanitarian demining
Notes on damage by subsidences in Rheinschwestphalian coal area
External Configuration of an Air Droppable Land Mine
Northern Pacific develops rosebud coal field
The wakefield rescue station and rescue car
Undersea mines grow smarter and deadlier
Wind Tunnel Tests on an Air Droppable Land Mine
Towards Autonomous Surveying of Underground Mine using MAVs
Investigation of open pit transportation control by means of computers
Inflex system for freight car traffic monitoring on mine railroads
Utah copper company builds railroad tunnel
Experience with underground diesels