Bricks

Bricks - (Easton's Bible Dictionary)

The making of, formed the chief labour of the Israelites in Egypt (Ex. 1:13, 14). Those found among the ruins of Babylon and Nineveh are about a foot square and four inches thick. They were usually dried in the sun, though also sometimes in kilns (2 Sam. 12:31; Jer. 43:9; Nah. 3:14). (See [80]NEBUCHADNEZZAR.)

The bricks used in the tower of Babel were burnt bricks, cemented in the building by bitumen (Gen. 11:3).