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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 ...
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 ]
Radon experiments at the Radium Institute in Paris, 1924. Radon is a naturally occurring radioactive noble gas discovered in 1900 by Friedrich Ernst Dorn (1848-1916) and is considered carcinogenic. Radon is increasingly found in areas with high levels of uranium and thorium in the soil. These are mainly areas with high granitic rock deposits.
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]
A portion of the Jenks Public School District extends east of the Arkansas River encompassing a part of the city of Tulsa south of 91st street. It is one of the fastest-growing cities in Oklahoma. As of the 2020 census, the city population was 26,017, compared to 16,924 in 2010, an increase of 49.4 percent.
LONDON/SYDNEY (Reuters) -The U.S. dollar was poised for a big weekly gain on Friday, towering near one-year highs as a hawkish turn from the Federal Reserve chief sent short-term Treasury yields ...
The House voted on Wednesday to pass a critical defense policy bill known as the National Defense Authorization Act, which includes a ban against gender-affirming care for some transgender ...
Ponca City Public Schools serves the general population's education requirements in almost all of the city limits. [33] Ponca City Public Schools serve over 5100 students. High schools