A 35 year-old Watsonville man suffered major injuries when a Butane Honey Oil lab in Prunedale exploded Monday afternoon. A 39 year-old Salinas resident was arrested in connection with the 3 p.m. explosion on the 16,000 block of Mer idian Road. Anyone with information about the lab, or the explosion, is encouraged to contact the Monter ey County Sheriff’s Department.