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.
How Thick Should Your Granite or Marble Countertops Be? October 09, 2012 The industry standards typically hover around 1 and 1/4 inch (or 3 centimeters) for granite and marble kitchen island countertops and 3/4 inch (or 2 centimeters) for bathroom granite and marble vanity tops.