In glassmaking, an open-ended crucible placed in a furnace for heating the blowing irons.

1. A metal block used as a form or support in various bending operations.

2. A replaceable piece used to break rock in certain crushing machines.

3. See <<brake shoe>>

1. Pieces of steel fastened to a mine cage and formed to fit over the guides to guide it when it is in motion.

2. The bottom wedge-shaped piece attached to tubbing when sinking through quicksand.

3. A trough to convey ore to a crusher.

4. A coupling of rolled, cast, or forged steel to protect the lower end of the casting or drivepipe in overburden, or the bottom end of a sampler when pressed into a formation being sampled.