79093441
Feb 3, 2011
Apr 10, 2012
non-metal building materials, namely, concrete, cement, mortar, aggregate, sand, gravel, stone, fly-ash, cementitious materials, cement mixes, and concrete mixes; rigid pipes, not of metal; asphalt, pitch and bitumen; buildings transportable, not of metal; monuments, not of metal
Nonmetallic Building Materials