Fly ash is a by-product when coal gets burned and is toxic; it contains heavy metals such as arsenic, boron, cadmium, chromium, mercury and selenium.
The ash is toxic; it contains heavy metals such as arsenic, boron, cadmium, chromium, mercury and selenium. Fly ash is a by-product when coal gets burned.
Fly ash is a by-product when coal gets burned. The ash is toxic; it contains heavy metals such as arsenic, boron, cadmium, chromium, mercury and selenium.
Fly ash is a by-product when coal gets burned. The ash is toxic; it contains heavy metals such as arsenic, boron, cadmium, chromium, mercury and selenium.