Prevailing wages are established by regulatory agencies for each trade and occupation employed in the performance of public work, as well as by State Departments of Labor or their equivalents. Prevailing wages were first established shortly after the Civil War when Congress passed the National Eight Hour Day law.upporters suggest that prevailing wage laws seek to prevent public construction projects from destabilizing a local construction industry and to advance other priorities such as workforce development, green building, and greenhouse gas reduction.
In some species, the claspers are held in place by spiny projections. Claspers can also refer to appendages some male insects use to hold females in place during copulation. Male dragonflies, for example, have sharp claspers at the tip of their segmented bodies that fit into the back of the femaleâs head during mating. (Read more about dragonflies' strange sex habits.)
A snap clasp is commonly used clasp for all jewelry types. On one side is a small metal tongue with a tiny perpendicular metal piece. The metal tongue is inserted through a loop on the other side of the jewlery piece and is snapped into place.