Hammer with one end of the head forked and curved like a claw to pull out nails.
Clay
Firm, finely ground earth which is produced by the chemical decomposition of rocks or the deposit of fine rock particles in water and is used in the manufacture of brick, pottery and other ceramics due to its plasticity and ability to be molded when wet but drying hard.
Clay aggerate
A product that is manufactured exclusively in high tech kilns in Germany and used as a soil replacement on hydroponics. It once was very popular in the late '70's.
Clay masonry
Natural clay brick, which has different, grade classifications. Grade SW for floors; Grade NW for floors, Grade LB or LBX is for structural load bearing.
Clay pipe
Gravity rated, not designed for more pressure than that which is exerted by fluid flowing by natural gravity, clay drain pipes and fittings.
Clay soil
A soil containing from 30 to 100 percent clay. It is fine-textured and sticky when wet.
Clay stone
Rock consisting of hardened clay; hard concretionary body found in clay deposits.
Clay tile
Tile made of clay, which can be curved to form a cylinder, or flattened for floor tile.
Clean air act
The original Clean Air Act was passed in 1963, but the national air pollution control program is actually based on the 1970 version of the law. The 1990 Clean Air Act Amendments are the most far-reaching revisions of the 1970 law. The 1990 amendments are often referred to as as the 1990 Clean Air Act.
