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.
ORIGIN OF SILK-LEGEND OF LADY HSI-LING-SHIH. Chinese legend gives the title Goddess of Silk to Lady Hsi-Ling-Shih, wife of the mythical Yellow Emperor, who was said to have ruled China in about 3000 BC. She is credited with the introduction of silkworm rearing and the invention of the loom.