Boiler slag is a byproduct generated from the combustion of coal in power plants. When coal is burned, the minerals within it melt and form molten ash, which then cools and solidifies into small, glassy particles. This material is often dark and shiny, resembling small pebbles. Boiler slag is commonly used in construction and engineering projects. It can be utilized as a lightweight aggregate in concrete, as well as in road construction and as a soil amendment. Its unique properties make it a valuable resource in various applications, promoting recycling and sustainability in the industry.