This is almost a month old, but it appears that OSHA has completed it's investigation in to the death of Peyton Trueblood last summer at Palo Duro Canyon. Peyton was killed in a pyrotechnics storage magazine explosion on July 31, 2015. The details from the OSHA citation are in the article.
http://abc7amarillo.com/news/local/osha-issues-citations-following-death-of-21-year-old-texas-worker
http://abc7amarillo.com/news/local/osha-issues-citations-following-death-of-21-year-old-texas-worker