Section for gallery for access of pit in AutoCAD, dwg file.

This Architectural Drawing is AutoCAD 2d drawing of Section for gallery for access of pit in AutoCAD, dwg file.  Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels.