El Dorado Chemical Co. to Build $120M Plant, Resume Existing Operations by Luke Jones Posted 12/4/2012 04:46 pm Updated 5 years ago El Dorado Chemical Co. says it is building a $120 million nitric acid plant and restarting operations at its existing sulfuric acid plant. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.