Pipe Thread Types and Designations. Overview: Different types of screw threads have evolved for fastening, and hydraulic systems. Of special concern are plastic-. to-metal, taper/parallel threaded joints in hydraulic circuits.
The taut Mike Nichols drama Silkwood (1983) was based on the real life case of a plutonium processing plant metallurgy worker, Karen Silkwood (Meryl Streep), who discovered corporate powers were covering up radiation leaks at Oklahoma's Kerr-McGee plant.
Bill Silkwood, Karen's father, sued Kerr-McGee in 1976 and won. The victory was overturned on appeal, but 10 years later -- in 1986 -- there was an out-of-court settlement in which the company paid Silkwood $1.38 million. In was in 1986 that Kerr-McGee's name was linked to another disaster in Oklahoma.