Health officials issued an advisory for residents after a spill of 580 tonnes of sand used in fracking. The spill has been cleaned up, but anyone who removed sand from the site should take precautions. So-called “frac sand” is a very fine crystalline silica material and direct exposure to or inhalation of it can pose a health risk. Precautions include wetting the sand by misting it with water to control dust and the release of airborne particulates. The AHS also recommends wearing goggles and respiratory protection.