Yup. DOVO, the Belgian army's demining service, still retrieves about 200 tons (i.e. 200,000 kg) of shells just from the small area in the northwest of the country where fighting was the heaviest. Accidents happen sometimes with farmers who dig up fosfor- or yperite - here's a picture of someone's hand 24h after touching some yperite (it's not pretty!):
http://www.forumeerstewereldoorlog.nl/viewtopic.php?t=2325&#... . The caption says he used a handkerchief to wipe off his hand, which then also burnt his leg.