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The results of a methodical ten-year-long, case-controlled study of residential radon exposure in Worcester County, Massachusetts, found an apparent 60% reduction in lung cancer risk amongst people exposed to low levels (0–150 Bq/m 3) of radon gas; levels typically encountered in 90% of American homes—an apparent support for the idea of ...
Radon is thus assumed to be the second leading cause of lung cancer after smoking, and accounts for 15,000 to 22,000 cancer deaths per year in the US alone. [9] [better source needed] However, the discussion about the opposite experimental results is still going on. [10] About 100,000 Bq/m 3 of radon was found in Stanley Watras's basement in 1984.
Sayre Public Schools is a school district serving the cities of Sayre and Elk City in Oklahoma. [13] It includes the following schools: Sayre Elementary School; Sayre Middle School; Sayre High School; In 1994–5, the district was the defendant in a liability suit eventually decided by the Supreme Court of Oklahoma. [14]
The Yukon Public Schools district covers most of Yukon. [18] It includes 11 schools, served a community of 36,938 people, and encompasses 66.10 square miles of land and 2.18 square miles of water. [19] The school district offers pre-school through secondary school education. [19] The school served 8,781 students in the 2017–2018 school year. [20]
In preparation for Oklahoma's admission to the union on an "equal footing with the original states" [6] by 1907, through a series of acts, including the Oklahoma Organic Act and the Oklahoma Enabling Act, Congress enacted a number of often contradictory statutes that often appeared as an attempt to unilaterally dissolve all sovereign tribal governments and reservations within the state of ...
The construction industry is the number one user of phosphogypsum in 2020, with 10.5 Mt used as concrete set retarder and 3.5 Mt used in drywall. [13] It is also used as a chemical feedstock for producing sulfates , and as a soil conditioner similar to regular gypsum. [ 14 ]
In fall 1991 the Big Cabin School District, which had a student population of under 100, voted to dissolve itself. There were referendums on merging with the Adair school district and the White Oak school district, but the residents of the district did not accept them. In May 1992 residents voted to join the Vinita school district. [10]
According to the U.S. Census Bureau, the county has a total area of 776 square miles (2,010 km 2), of which 749 square miles (1,940 km 2) is land and 2.7 square miles (7.0 km 2) (3.5%) is water. [5] The county lies in the foothills of the Ozark Mountains. It includes most of Tenkiller Lake and part of Fort Gibson Lake.