Massachusetts Fire Marshal Stephen Coan on Thursday suspended the license of New Castle, Pa.-based Pyrotecnico after workers mowing lawns ran over unexploded shells from Fourth of July shows.
Lawnmowers ran over shells in Ware, Waltham and Stoughton (STOH'-tuhn) days after the shows. Unexploded shells were also found in Wilmington and Worcester (WUS'-tur).
Coan says the company violated the state fire code by not searching for unexploded shells the day following a show.
Pyrotecnico President Stephen Vitale says they received defective fireworks from China, which have been eliminated from the inventory, and instituted new safety procedures. He is says he's confident in the company's safety record.