The mining industry spans the globe, as do alumni of the University of Arizona mining and geological engineering program. Many got their feet wet working as interns for Arizona-based mining companies like Freeport-McMoRan.
Weight A 1 Â½ inch thick countertop made of standard concrete has an approximate weight of 18.75 pounds per square foot. (Granite is approximately 18 pounds per square foot.) Standard cabinetry will typically support this weight because itâs distributed over a large area.
Quick Answer. A granite slab doesn't have a set size. The size varies as the material is quarried naturally from the earth. Most of the granite slabs that are used for making countertops range from 7 to 9 feet wide, 4 to 5.5 feet deep and around 1.25 inches thick. Continue Reading.