Heat & Frost Insulators & Allied Workers.
International Association of Heat and Frost Insulators and Allied Workers
Workers who apply insulation materials to pipes, tanks, boilers, ducts, refrigeration equipment and other surfaces requiring thermal control, or who do removal of asbestos-containing material.
Workers who apply insulation materials to pipes, tanks, boilers, ducts, refrigeration equipment and other surfaces requiring thermal control, or who do removal of asbestos-containing material.
