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.
Silk is a thin, but strong fiber that silkworms produce when they are making their cocoons. It can be woven into a very soft and smooth fabric. Silk fabric was invented in Ancient China and played an important role in their culture and economy for thousands of years.Legend of Silk. Legend has it that the process for making silk cloth was first invented by the wife of the Yellow Emperor, Leizu, around the year 2696 BC.The idea for silk first came to Leizu while she was having tea in the imperial gardens.ilk is a thin, but strong fiber that silkworms produce when they are making their cocoons. It can be woven into a very soft and smooth fabric. Silk fabric was invented in Ancient China and played an important role in their culture and economy for thousands of years.