| mat [mat] CIVIL ENGINEERING 1. A steel or concrete footing under a post. 2. Mesh reinforcement in a concrete slab. 3. A heavy steel-mesh blanket used to suppress rock fragments during blasting. MATERIALS Randomly distributed felt or glass fibers used in reinforced-plastics lay-up molding. MINING ENGINEERING An accumulation of broken mine timbers, rock, earth, and other debris coincident with the caving system of mining. |