.pld Extension - List of programs that can open .pld files In the following table, you can find a list of programs that can open files with .pld extension.This list is created by collecting extension information reported by users through the 'send report' option of FileTypesMan utility.
According to a national residential radon survey completed in 1991, the average indoor radon level in the United States is 1.3 picocuries per liter (pCi/L). The average outdoor level is about 0.4 pCi/L. Excessive radon levels have been found in all of the 50 states.
1 Radon causes about 21,000 lung cancer deaths each year in the U.S. 2  Radon is produced from the natural breakdown of uranium in soil, rock and water. 3  Radon is found all over the U.S. It can be detected in any type of building-homes, offices, and schools. 4  It is impossible to smell or taste radon.