with the cities of Elkins and Beckley ranking 9th and 10th in the U.S. respectively for the number of cloudy days per year (over 210). In addition to persistent cloudy skies caused by the damming of moisture by the Alleghenies, West Virginia also experiences some of the most frequent prec...
third party testing agencies such as Underwriters Laboratories, Underwriters Laboratories Canada, Southwest Research Institute, United States Testing, Western Fire Center, Forestry Commission of New South Wales Australia, European Institute for Fire Research, United States Forestry Department and Maxim ...