Which material is often used as a substitute for silica sand to prevent silicosis in workers?

The material that is often used as a substitute for silica sand to prevent silicosis in workers is coal slag. Coal slag is a byproduct of the combustion of coal and provides an effective alternative in applications such as abrasive blasting and sandblasting. Unlike silica sand, coal slag contains negligible amounts of crystalline silica, which significantly reduces the risk of developing silicosis, a serious lung disease caused by inhaling fine particles of silica dust.

Coal slag not only minimizes health risks associated with silicosis but also has properties that make it suitable for various abrasive applications. Its use remediates the hazardous environmental conditions that silica sand can create in the workplace. The awareness of the dangers associated with silica dust has led to safer practices through the adoption of alternative materials like coal slag in many industrial settings. This makes it a preferred choice for ensuring the health and safety of workers in environments where abrasive materials are used.