Chromium, Nickel and Cobalt get into your lungs when you breathe in grinding coolant or welding fumes. Chromium, Nickel and Cobalt are in grinding coolant in two ways. They get in as really little particles in size from one -- one thousandth (1/1,000 or 25 microns) of an inch down to one --twenty five thousandth (1/25,000 or one micron) of an inch.read more
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