Watch Promise in the Sand

Silica sand is used for fracking. Pure silica is scarce in the oil fields. But it's easy to find beneath the farms of Wisconsin. When the fracking craze started, corn fields turned into open pit mines. Then, when the price of oil dropped, mines started to close. What happens when a mining boom goes bust?

Promise in the Sand is a 2018 documentary with a runtime of 24 minutes.