Coal mining company Genwal Resources has pleaded guilty to corporate criminal charges stemming from the 2007 Crandall Canyon mine collapse in Utah that left nine miners and rescuers dead.
Federal prosecutors say a plea agreement includes a provision that no criminal charges will be filed against any individuals in the case.
Federal and congressional investigators blamed the an initial mine collapse on "retreat mining," in which pillars of coal holding up the roof of the mine are dug out, causing collapse of the mine behind them.
The earthquake and tsunami that hit Japan on March 11, 2011, lasted for many terrifying minutes. But the multiple nuclear meltdowns that followed created an emergency that lasted for weeks and a legacy that will last for decades.
Here's how the event unfolded. The tsunami knocked out power to the Fukushima Dai-ichi nuclear power plant. As a result, the cooling systems failed and three reactors melted down. Steam laced with radioactive material poured into the air. Water contaminated with radiation also flowed into the sea.
Persistent pressure and criticism have prompted the Church of Jesus Christ of Latter-day Saints to erect a new "technological barrier" in the system used for controversial posthumous or proxy baptisms.