Deaths in the oil fields reached a 10-year high nationwide in 2012, and the Houston Chronicle spent more than a year examining the carnage behind the nation's oil and gas boom. A kick-off series published in February 2014 identified the most death-prone oil patch employers and explored why the government has failed to keep its promise to enact specific onshore drilling regulations and why, as a result, offshore workers receive more protections than those in states like Texas. The stories mined government reports, examined workers' comp insurance claims, profiled workers and their families and confronted Texas employers responsible for a disproportionate numbers of deaths. The newspaper went on to explore information on deaths in traffic accidents related to the oil boom that were published and aired in September 2014 in a collaboration that included radio reports by a reporter from Houston Public Media. With that partnership, the series reached far more oilfield workers and their families - who are based in far-flung areas throughout Texas. The final story in the Chronicle series, published in December, revealed how oilfield accidents are often under-reported nationwide - benefiting drilling companies who sometimes hide accidents to win contracts. The series included print stories, interactive maps and audio reports.