In hydraulic mining, gratings used to catch and throw out large stones from the sluices.

A grating, usually constructed of steel rails, placed over the top of a chute or ore pass for the purpose of stopping large pieces of rock or ore that may hang up in the pass.

A screen made from railroad rails, pipes, or heavy-duty screenwith holes. Dirt and rocks that are dug up in mining operations are dumped onto the screen where the smaller materials pass through. See Cat Mining.

(2) a device used for coarse screening of bulk materials. A rugged screen for rough sizing at a comparatively large size (for example, 6 inches); it can comprise fixed or moving bars, disks or shaped tumblers or rollers.

A grizzly bear. See under Grizzly, a.

powerful brownish-yellow bear of the uplands of western North America

Grizzly (also known as 'Killer Grizzly') is a 1976 horror film, directed by the late William Girdler. The film is about a 18 foot man-eating Grizzly bear that terrorizes a National Forest. The film stars Christopher George (from television's The Rat Patrol), veteran western actor Andrew Prine and Oscar nominee Richard Jaeckel.