Why can't you? Cement causes silicosis in thousands of people when used and handled properly according to current legislations.<p>This product wouldn't cause silicosis when used correctly, even if it does it'll have to exceed the percentages reached by long-time cement layers to be concerning. So really, why can't you see it being approved? Do you know of a legitimate reason, or is it a personal opinion?<p>I've worked in construction, I've had my hands blister from some materials I've used yet you can pick them up at any hardware store without question. There's no instruction on fiberglass insulation that states face masks must be worn despite its fibers can cause rhinitis and lung irritation.<p>Hell, Talcum Powder with over exposure can have the same effects on the lungs as asbestos and it's used daily by millions on their infants.<p>There's <i>many</i> things approved for the general public that are exceptionally dangerous when they're being used correctly. There's an even bigger list for when things are being used incorrectly, even down to detergents.