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B
B
Babbitt: A soft metal alloy used in some seals and bearings.
Backbite: A backlash of tongs that results in a grip in the wrong direction.
Backll: Waste rock materials that support the roof once the ore has been
removed.
Backow: (1) A ow condition, caused by differential pressure, resulting in
the ow of liquid into the potable water supply system from sources other
than those intended; or the backing up of liquid, through a conduit or chan-
nel, in a direction opposite to normal ow. (2) Return ow from injection of
a uid into a formation.
Backow Preventer: Any effective device, method, or construction used to
prevent backow into a po ...