A staff restaurant <a href=" http://www.rwanda-yaca.org/does-desvenlafaxine-work.pdf ">pristiq gluten</a> More than 2 million U.S. workers are exposed to silica dust each year, mostly in the construction trades such as jackhammering, cutting, grinding or sawing stone, concrete, bricks and masonry. About 200 workers die annually from silicosis, and as many as 7,300 new cases of silicosis develop each year.