a. As used by churn drillers, to remove a liquid from a borehole by use of
a tubular container attached to a wire line. See also: bailer
b. The handle on a bucket, cage, or skip by means of which it may be
lifted or lowered. Long
c. A large clevis. Long
d. To dewater a mine with a skip or bailer.
e. As used by the diamond- and rotary-drilling industries, (1) a U-shaped
steel rod with the open ends formed into eyes fitting over two lugs
projecting from the sides of a water swivel, or (2) a U-shaped steel rod
with open ends attached to an open-sided, latch-equipped, circular collar,
that fits around a drill rod and under the base of a water swivel. Both
types of bails are designed to permit circulation of fluid through the
drill rod string while the rods are suspended on the hoist line or while
the rods are being raised or lowered a few feet with the hoisting cable.
Dictionary of Mining, Mineral, and Related Terms