for example, we know that the most common proppant is frac sand, about 80% of the present market
however, the most desirable sand often travels a long way from mine to well and in the following set of slides, you see clearly just how far, from Wisconsin, Minnesota and Illinois
now, possibly critically, flyash could substantially drop the transport cost, but what needs to be appreciated is that there will be several stakeholders and as such this can take time to put together as the entire supply chain is an issue