A framework of timbers and plank backing for a shaft lining, to prevent caving, percolation of water, etc.
Cribbing time meant playing the card game cribbage, usually in the lunchroom when you should have been working. The lunch box became known as a crib box and lunch was refereed to as having your crib. The term also applied to the close setting of timbers usually in porous ground to stop leaching.
(1) timber framing to retain the walls and ceiling of an adit opening or drift, and prevent loose materials from falling, (2) a method of timbering in underground mining used primarily to rectify the removal of too great a percentage of the rock on the advance, and has the effect of replacing part of the rock.
Framework of wood, concrete or metal beams filled with stones or earth to act as retaining wall or support for a structure.
A framework of wooden timbers, steel, or concrete that acts as a retaining wall for loose rock, or dirt.
A wall-like structure made of rocks and/or timber that acts as a retaining wall, while allowing controlled drainage of water through its structure.
The construction of cribs or timbers laid at right angles to each other, sometimes filled with earth, as a roof support or as a support for machinery.
1. Placement of wood to keep a load from moving during transit. 2. Framework of timber lining and supporting a mineshaft. 3. Trenching a narrow area with a backhoe in a way so as to allow the areas on either side of the trench to remain untouched. The soil is placed in the trench close to the machine and removed as the trenching progresses.