Dynamite used in illegal fishing. You throw dynamite in to the water, it explodes and dead fish rise to the top and you grab the dead fish.
They’re pumping!
From BP site:
BP started the “top kill” operations today to stop the flow of oil from the MC252 well in the Gulf of Mexico.
The procedure is intended to stem the flow of oil and gas and ultimately kill the well by injecting heavy drilling fluids through the blow out preventer on the seabed, down into the well.
Pumping started at 19.00 (UK) and 13.00 (CDT) and continues.