Military engineers are contemplating on how to deal with a beach crisis on Martha's Vineyard - World War II artillery scrap.

About 30 rocket motors, bomb casings and other pieces of military hardware have been uncovered on South Beach during the past week, possibly the result of beach erosion. No live explosives were found.Officials have closed the beach, which commonly attracts thousands of people on hot summer days. A decision to reopen the half-mile stretch of shore will be made later this week.

Crews found nine pieces of scrap half buried in the sand on Monday, and some believe more exists since the beach was used as a practice bombing target by the Navy in World War II.

Sgt. Sandra Lucas of the Massachusetts Environmental Police said most items found still require removal by bomb experts because there is the possibility some of the material may be active.

Officials said a combination of strong spring storms, higher than normal tides and gradual erosion is probably causing the scrap to surface on the resort island beach.