At the time of purchase, Antelope was the third-largest coal mine in the nation. With Antelope as an asset, the Navajo Transitional Energy Company (NTEC) became the third-largest coal producer in the United States of America. NTEC is moving its headquarters from New Mexico to Colorado as a result of the transaction.<ref name=pr/>
===Funding of Climate Change Denial===
Bankruptcy filings from Cloud Peak showed that "the coal giant gave contributions to leading think tanks that have attacked the link between the burning of fossil fuels and climate change, as well as to several conservative advocacy groups that have attempted to undermine policies intended to shift the economy toward renewable energy" according to ''The Intercept''.<ref>Lee Fang [https://theintercept.com/2019/05/16/coal-industry-climate-change-denial-cloud-peak-energy/ A MAJOR COAL COMPANY WENT BUST. ITS BANKRUPTCY FILING SHOWS THAT IT WAS FUNDING CLIMATE CHANGE DENIALISM.] ''the Intercept'' May 16, 2019</ref>
===Cloud Peak Bankruptcy===