Anthony Forest Releases Online Lumber Calculator by Jordan King Posted 7/22/2013 12:00 am Anthony Forest Products of El Dorado launched a lumber span calculator on its website to help craftsmen adjust to a recent industrywide change in design values for Southern pine dimension lumber. 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.