Mineral mining

Mineral mining

The extraction of valuable minerals or other geological materials from the earth for economic interests.

Industry: Mining

Add a new term

Contributors in Mineral mining

Become a Contributors

Mineral mining

Trapdoor

Mining; General mining

A door erected in a roadway to prevent the passage of air. When doors are erected between an intake and a return airway, they may be known as separation doors.

Door

Mining; General mining

A door erected in a roadway to prevent the passage of air. When doors are erected between an intake and a return airway, they may be known as separation doors.

Bearing door

Mining; General mining

A door so placed as to direct and regulate the amount of air current necessary for the proper ventilation of a district of a mine.

Ventilation doors

Mining; General mining

A door constructed to restrict the flow of ventilation air while permitting the passage of personnel and equipment.

Feeding baffle

Mining; General mining

A door or gate that can be opened or closed to regulate the discharge of material from a hopper, bin, or chute.

Weather door

Mining; General mining

A door in a mine level whose purpose it is to regulate ventilation currents. A trapdoor.

A drill mounting often made at the mine to suit the tunnel requirements. It usually comprises two girders strapped together to form a replica of the tunnel shape but smaller in size. The structure is ...