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non-metallic building materials, namely, sand, gravel, stone; [ roofing slates, landscaping slates, architectural design slates, bricks, brick slabs, brick tiles, ] concrete blocks, concrete slabs, [ concrete roofing tiles, clay slabs, clay tiles, ceramic tiles, paving tiles, marble tiles; tar, pitch, asphalt; bitumen and macadam; ] portland cement, roofing cement, masonry cement, granulated blast furnace cement, hydraulic cement, stucco cement, pozzolanic cement, cement mixes, concrete, ston...
Registered · July 29, 1996 · 75141886 ·