After the bottom had fallen out of the oil and gas market, Dearing Compressor & Pump was hanging on by a thread. But hang on it did.

As an example, expanded shale, clay and slate (ESCS) lightweight aggregates are fired in rotary kilns and so represent a significant amount of embodied energy and greenhouse gas emissions.

Welcome to our guide to the commodities powering the economy. Today, reporter David Wethe examines how the shale industry is responding to the Trump administration’s enthusiasm for fossil fuels.

President-elect Donald Trump wants U.S. oil producers to rekindle their once-frenzied drilling, but the country’s shale patch has changed since his first administration. Wildcatters are mostly ...