User talk:Irene Viljoen

Hi I would like to know how toxic Silica is? Can it kill someone? How long does it take for the dust to go into the lungs? Someone grinded tiles and about 2 months later died. We were told after about 4 months that he died of heart failure.

I only learnt of Silica today and am just worried that that could have killed him. Please can anyone supply me with answers? I really need to know. Thanks