Abstract Background Silicosis has been one of the most serious occupational public health problems worldwide for many decades. The global burden of silicosis is largely unknown. although it is thought to be more prevalent in low and medium-income countries. Individual studies among workers exposed to silica dust in various industries. https://www.jmannino.com/great-pick-Sophie-Allport-Zebra-Made-to-Measure-Blackout-Roller-Blind-Soft-Grey-Blue-top-super/