El Dorado Chemical Co. to Build $120M Plant, Resume Existing Operations by Luke Jones Posted 12/4/2012 04:46 pm Updated 2 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 stories older than 20 days. Purchase Now Already have archive access? Login to view this article.