The most common source of indoor radon is uranium in the soil or rock on which homes are built. As uranium naturally breaks down, it releases radon gas which is a colorless, odorless, radioactive gas. Radon gas enters homes through dirt floors, cracks in concrete walls and floors, floor drains and sumps. When radon becomes trapped in buildings and concentrations build up indoors, exposure to radon becomes a concern.
Natural reader full crack 30
The diesel crack spread, which represents the profit generated by turning a barrel of crude into diesel, approached $70 a barrel on Monday for the first time since June to stand at the highest for this time of year in records going back to 1986. The so-called crack spread was below $20 a barrel the same time last year. Demand is set to grow this winter with the US northeast likely burning more diesel for heating amid soaring natural gas prices. 2ff7e9595c
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