If using a massive dome to cover the source of the oil gushing into the Gulf of Mexico doesn’t work, crews are preparing for another option: clogging it.

Engineers are examining whether they can close a failed blowout preventer by stuffing it with trash, said Adm. Thad Allen, the commandant of the Coast Guard. The 48-foot-tall, 450-ton device sits atop the well at the heart of the Gulf oil spill and is designed to stop leaks, but it has not been working properly since the oil rig Deepwater Horizon exploded April 20 and later sank.

“The next tactic is going to be something they call a junk shot,” Allen told CBS’s “Face the Nation” on Sunday. “They’ll take a bunch of debris — shredded up tires, golf balls and things like that — and under very high pressure, shoot it into the preventer itself and see if they can clog it up and stop the leak.”

Oil company BP, the well’s owner, had attempted to lower a four-story containment vessel over the well to cap the larger of the well’s two leak points. But that plan was thwarted Saturday after ice-like hydrate crystals, formed when gas combined with water, blocked the top of the dome and made it buoyant.

BP said it has not abandoned the dome plan. But Doug Suttles, the company’s chief operating officer, told reporters that officials are considering the “junk shot” along with other possible solutions.

Suttles said Saturday that trying to stuff shut the blowout preventer had not yet been attempted because of possible challenges and risks. And Allen said the approach had worked in the past, but never so deep beneath the water’s surface.

(Source: CNN)