Fluorspar Mining Cancer

occupational factor associated with mining the ore of several fluorspar mines was suspected. An analysis of the ore mined did not reveal the presence of minerals previously associated with lung cancer, but high concentrations of radon daughters, sus pected of being carcinogenic, were demonstrable in some areas of the two mines still operating

Get Price

A cohort study of the mortality experience of 1,743 underground fluorspar miners and 321 surface workers from 1950 to 1984 reported previously has been extended to include 6 additional years of follow-up (1985-1990). A statistically significant relationship was noted between radon-progeny exposure and risk of lung cancer mortality

Get Price

Since 1952 two to three deaths from primary cancer of the lung have occurred regularly each year among the male inhabitants of the small fluorspar mining community of St. Lawrence, Newfoundland. These constituted 23 of the 51 deaths that occurred during the 10-year period 1952-61 among employees with one or more years of underground mining experience

Get Price

II. Part If consists of an investigation of the presence of pneumoconiosis, healed tuberculosis, chronic bronchitis, lowered lung function and the effect of smoking in relation to this cancer. 280 miners and millworkers were examined along with 104 other workers as controls. The incidence of, pneumoconiosis was small and could be excluded as a factor

Get Price

Understand the relationship between RDP exposure and lung cancer by examining lung cancer deaths (1950–2001) in workers who were exposed to RDP. Background. Fluorspar is a non-metallic ore used in the manufacturing of aluminum and glass. In the mid-1940s, an abnormally high number of fluorspar miners suffered from what was diagnosed as

Get Price

Aug 15, 2013 Results Of 34 studies identified, 27 studied coal mining as an occupational exposure (coal miner cohort or as a retrospective risk factor) but only seven explored health effects in surrounding populations. Overall, risk assessments were reported for 20 cancer site categories, but their results and frequency varied considerably

Get Price

Oct 11, 2010 The busy mining region of southern Illinois and western Kentucky once produced about 90% of the fluorspar used in the U.S., he says. First cheaper Mexican fluorspar and then the

Get Price

May 01, 2014 In China, coal mining has caused more than 20 million people to suffer from fluorosis. China currently produces the most fluorite, followed by Mexico, Mongolia and Russia. South Africa holds the largest total fluorite deposits. Fluorite, also known as fluorspar, occurs in large veins in a variety of ores and crystals, including iron, coal, and

Get Price

Jan 11, 2021 Ares Strategic Mining is up 9.89 per cent with shares trading at C$0.50. Vancouver-based Ares Strategic Mining (ARS) has started preliminary planning for a proposed fluorspar site in the Bell Hill mining area. Previous sampling from the company's Bell Hill claims has demonstrated high-grade fluorspar, leading it to believe in the uniformity of

Get Price

Jul 11, 2017 Lung Cancer and Prevention in Mining Conference: July 11, 2017, Sudbury, Ontario. A conference on the impact of exposure to cancer-causing substances in Ontario mining was held in Sudbury, Ontario on July 11, 2017. The day focused on cancers caused by past exposures to diesel engine exhaust and radon gas, and the steps that can be taken to

Get Price

Radon-progeny exposure and lung cancer risk in a cohort of Newfoundland fluorspar miners. Morrison HI, Villeneuve PJ, Lubin JH, Schaubel DE. Radiat Res

Get Price

1. br j ind med. 1964 apr;21:94-109. lung cancer in a fluorspar mining community. i. radiation, dust, and mortality experience. devilliers aj, windish jp

Get Price

I. Fluorspar (calcium fluoride, CaF2) mining was started in St. Lawrence in Newfoundland in 1933. Part I of this paper is concerned with the prevalence of lung cancer in these mine workers. Of the 119 deaths in miners up to 1961, 26 were due to lung cancer

Get Price

A survey of respiratory symptoms, lung function tests, and chest radiography was carried out among the fluorspar miners of St. Lawrence, Newfoundland, in whom the incidence of carcinoma of the lung (De Villiers and Windish, 1964) had previously been shown to

Get Price