For years, mining firms have looked to Wisconsin as a source for the high-quality sand that functions as a proppant in hydraulic fracturing processes. Find out why some leading frac sand companies are now making investments in West Texas, and what it means for the oil plays in the region.

Oklahoma's highly developed oil and gas infrastructure makes it one of the most in-demand oil drilling spots in the US. Key to this demand is the geology of the state's oil fields, which feature stacked formations. Find why stacked formations make Oklahoma so desirable to oil and gas drillers, and what the future looks like in an up and down industry.

After a decades-long hiatus in major refinery construction in the US, two refineries in Texas are planned for completion in 2019, buoyed by investment in the Permian Basin. Find out what is driving these refinery construction plans and how they will impact the overall oil and gas industry.