The backup failed, resulting in a core meltdown and massive release of radiation.

Neither should have a big environmental impact, again assuming you are not talking about a massive release.

In the 2010 rainy season, a violent storm forced massive release of water to prevent the dam bursting.

Finally got around to uploading this massive release from man of the moment Sub Focus!

As the .5 should indicate, the new Indesign isn't a massive release.

The shift of mass and the massive release of energy very slightly altered the Earth's rotation.

When they fused, they created a massive release of heat and energy.

They were both gasping for breath and he fell to one side of her, limp with such a massive release.

"With a massive release of energy," Parks added, nodding as much to himself as to the colonel.

The only obvious warming strategy that he had avoided in the early years was the massive release of CO2 into the atmosphere.