It is natural to dismiss dangers that are rarely seen. That has become our present circumstance with respect to many devastating infectious diseases. Since medicine has made significant progress against its former greatest adversaries, complacent beliefs have flourished. Surprisingly, a new malady has arisen and we are now suffering from a growing amnesia regarding the calamitous effects of infectious disease.
The city has very strict rules covering the prior use of narcotics by police applicants. They must now be drug-free. They cannot have used cocaine, heroin or other hard drugs for 10 years. They cannot have used marijuana six months before background checks. And they cannot have sold marijuana or other drugs.
The form grinding process has dramatically increased the efficiency of gear grinding machines, and consequently the productivity of gear shops. New tools and advanced CNC controls facilitate faster cycle times; this pushes the process closer to its limits, however. Progress is made in small steps, but only with less stable process conditions as a result.