+86 0371 8654 9132

radon concentrations in ore mines of baluchistan

About this site

The concentrations of radon and consequently the radon doses in the coal mines of Baluchistan are smaller than the action limit of the ICRP-65. Mine workers are therefore relatively safe from the health hazards related to radon and its solid decay products.

About this site

Prolonged exposure to radon, the largest source (69%) of natural radioactivity, may cause lung cancer and bronchial tissue damage. So monitoring of radon at places of high radioactivity and in underground mines is important to assess the radiological

About this site

For these reasons radon measurements were carried out in some coal mines of Baluchistan, Pakistan. The measurements were based upon passive detection of radon using CN-85 track detectors in Box Type Dosimeters. The radon concentration varied from 121 to 408 Bq m −3 in the mines under study.

About this site

The radon concentration varied from 121 to 408 Bq m−3 in the mines under study. The computed radon dose varied from 1.38 to 4.67 mSv yr−1 with an average of 2.19±0.5 mSv yr−1. These coal ...

About this site

Using the slope of the experimentally determined curve in the units of Becqueral per kilogram (Bq kg-1) per unit alpha-track-density per hour (cm-2 h-1), radon concentrations (Bq m-3) were estimated using coal samples from various coal mines in two provinces of Pakistan, Punjab and Balochistan. Consequently, radon dose rates were computed in ...

Radon concentrations in abandoned mines, Cumbria, UK ...

G. Gillmore et al.: Radon concentrations in abandoned mines, Cumbria, UK 1313 1978). The mines in the valley visited in this study also in-cluded the Bonser (alternative spelling “Bonsor”) Mine. Since the 1950s, the copper mines of Coniston have been of historical interest and have continued to

About this site

The observed radon concentration levels in the houses varied from 52.68 ± 17.56 to 183.96 ± 31.10 Bqm-3 with an average value of 126.25 ±23.57 Bqm-3. The kucha, pucka and semipucka houses have ...

Estimation of radon concentrations in coal mines using a ...

Using the slope of the experimentally determined curve in the units of Becqueral per kilogram (Bq kg-1) per unit alpha-track-density per hour (cm-2 h-1), radon concentrations (Bq m-3) were estimated using coal samples from various coal mines in two provinces of Pakistan, Punjab and Balochistan. Consequently, radon dose rates were computed in ...

Risk assessment of radon in soil collected from chromite ...

Nov 01, 2019 · Radon and its progenies can be escape from soil, rocks during mining activity, particularly in case of underground mines. In mines, the concentration of radon and its short lived progenies may vary considerably, mainly depends on ventilation conditions and ore grade (Tirmarche et al., 1993). People working in the mines have a chance to expose ...

Risk assessment of radon in soil collected from chromite ...

Significantly higher radon concentrations (average 667 Bq m-3) were measured in houses within +/-150 m from the surface projection of the mining tunnel +50 m, compared with the houses further than ...

A review of radon measurement studies in Pakistan

Jun 17, 2019 · hybrid technique were used by Jamil and Ali (2001) to measure radon concentrations using coal samples collected from various coal mines in Punjab and Balochistan provinces of Pakistan. The majority of houses in Pakistan are mainly constructed from soil, sand, bricks and marble, etc.

Estimation of radon concentrations in coal mines using a ...

Jan 01, 2001 · The values of radon concentrations were determined for coal samples from seven coal mines (identified with asterisks in Table 1) using the conversion factor ‘CF’ which has been defined as the product of the slope of the curve (shown in Fig. 3), the weight of coal (10.0 g) in the radon chamber and the reciprocal of the volume of the ...

Radon concentrations in three underground lignite mines in ...

Sep 21, 2009 · The radon gas concentrations in the lignite mines were determined to be between 50 ± 7 and 587 ± 16 Bq m −3. The results obtained in these experiments are far under the action levels. The computed radon doses for the mine workers of Tunçbilek, Ömerler and Eynez lignite mines are 1.23, 2.44 and 1.47 mSv y −1, respectively.

(PDF) Radon Dosimetry in Erbil City Hospitals

For these reasons radon measurements were carried out in some coal mines of Baluchistan, Pakistan. The measurements were based upon passive detection of radon using CN-85 track detectors in Box ...

(PDF) Measurement of radon concentration levels in ...

The observed radon concentration levels in the houses varied from 52.68 ± 17.56 to 183.96 ± 31.10 Bqm-3 with an average value of 126.25 ±23.57 Bqm-3. The kucha, pucka and semipucka houses have ...

Radon concentration measurements in bituminous coal mines ...

Radon measurements were carried out in Kozlu, Karadon and Uzülmez underground coal mines of Zonguldak bituminous coal basin in Turkey. Passive-time integrating method, which is the most widely ...

Radon exhalation rate and indoor exposure in a Brazilian ...

Request PDF | Radon exhalation rate and indoor exposure in a Brazilian coal mine | Radionuclides in mineral coal and related rocks are of great concern to the human health, among them the radon ...

(PDF) Measurement and Comparison of Indoor Radon Levels in ...

Indoor Radon Concentrations and Assessment of Doses in Four Districts of the Punjab Province - Pakistan By Muhammad Rafique Evaluation of radon induced lung cancer risk in occupants of the old and new dwellings of the Dera Ismail Khan City –Pakistan

Measurement of radon concentration levels in Pakistan: An ...

May 04, 2016 · Abstract. Radon is known to be a major source of public radiation exposure which could lead to increased incidence of lung cancer. Besides its health hazards, it also has potential geological, industrial and nuclear applications. In this context, radon measurements studies have been extensively conducted and reported all over the world.

High radon exposure in a Brazilian underground coal mine

INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF RADIOLOGICAL PROTECTION J. Radiol. Prot. 24 (2004) 295–305 PII: S0952-4746(04)83706-6 High radon exposure in a Brazilian underground coal mine L H S Veiga1,3 , V Melo1 , S Koifman2 and E C S Amaral1 1 Instituto de Radioprote¸c a˜ o e Dosimetria, Avenida Salvador Allende s/n, Caixa Postal; 37750, Rio de Janeiro—CEP 22642-970,

New SRDN-3 probes with a semi-conductor detector for ...

May 01, 2010 · Lebecka J (1995) Radon in mines. Bezpieczeństwo Jądrowe i Ochrona Radiologiczna, nr 23, ss 21–39 (in Polish) 38. Li X, Zheng B, Wang Y, Wang X (2006) A study of daily and seasonal variations of radon concentrations in underground buildings. J Environ Radioact 87:101–106. Article CAS Google Scholar 39.

Radon - National Mining Association

Radon Concentrations Found in US Uranium Mines in 1949 to 1950* * Holaday and Doyle, 1964 Area # of Mines Range of Radon Concentrations (pCi L−1) Median Value (pCi L−1) Navajo reservation 4 37 –7,500 345 Utah 10 100 –50,000 5,000 Colorado 24 135 –22,300 2,540

(PDF) Radon concentration and gamma exposure in some ...

The average radon concentration for mines Stanterg, Artana, Hajvali and Badovc are 301.6, 191.4, 463.2 and 527.2 Bqm-3, respectively. Conclusion: The average of total annual effective doses from ...

Determination of Radon in Mine Dwellingsof Gauteng ...

Even with relatively efficient mining operations, high concentrations of radon are released into the air and water leaving a legacy of environmental contamination, which is a health threat to the community nearby. Because radon is a daughter of Uranium (238U), higher concentrations are usually found in the vicinity of uranium ore bodies.

Balochistan Coal Mines Names

Coal Mines In Pakistan Map. Radon concentrations in coal mines of Baluchistan 1 4 2000The Sor Range coal mines cover an area of nearly 80 km 2 and lie within the Quetta Kalat Districts of Baluchistan Pakistan The study area containing coal mines is comprised of sedimentary rocks of Jurassic (135–180 million years) to recent age as shown in Fig 1.

Radionuclides and radon levels in soil and ground water ...

rocks, has been reported to contain high radon concentrations (UNSCEAR, 2006). Radon has been described to be the second most frequent cause of lung cancer after cigarette smoking. Exposure to radon in water or air over a long period of time is believed to increase one’s life

Radon-222 Exposure and Dose Concentration Levels in ...

Oct 17, 2020 · Exposure to high concentrations of radon gas is the leading cause of lung cancer for nonsmokers according to the World Health Organization (WHO) figures. With poor ventilation standards and lack of awareness among Jordanians, constant monitoring of radon concentrations is vital. Multiple efforts have been made since the 1990s in order to create a national radon map of Jordan, by

Radon concentration measurements in bituminous coal mines ...

Jan 18, 2005 · Abstract. Radon measurements were carried out in Kozlu, Karadon and Üzülmez underground coal mines of Zonguldak bituminous coal basin in Turkey. Passive-time in

(PDF) Measurement and Comparison of Indoor Radon Levels in ...

Indoor Radon Concentrations and Assessment of Doses in Four Districts of the Punjab Province - Pakistan By Muhammad Rafique Evaluation of radon induced lung cancer risk in occupants of the old and new dwellings of the Dera Ismail Khan City –Pakistan

Indoor radon concentration measurement in the dwellings of ...

Oct 14, 2009 · Abstract. The present study deals with measurement of indoor radon concentrations in dwellings of the district Poonch of the state of Azad Jammu and Kashmir, Pa

chamalang coal mines wikipedia the free

baluchistan coal mines piadinabar.nl. Radon concentrations in coal mines of Baluchistan, Pakistan . concentration in living and working places. 2. Area under study. The Sor Range area of Baluchistan, Pakistan is an extensive area of coal mining where a number ofget price

Radon gas build up using alpha scintillation cell ...

Sep 01, 2021 · Radon and its progenies can be escaped from soil during mining activity, fractures and opening in rocks (Ahmad et al., 2019; Aswood et al., 2018). Radon atoms transfer through the spaces of soil, rocks and construction materials and exhale through the surface (Committee, 2008; Pisapak et al., 2017; Saad et al., 2018; Shashikumar et al., 2009).

Heavy metals contamination in soil and food and their ...

Sep 01, 2019 · Baluchistan province hosts rich mineralization such as ophiolites and sedimentary rocks along the Sulaiman fold belt . Therefore, it was imperative to study the HM concentrations in soil, growing food and fruits along the Sulaiman fold belt (SFB), Baluchistan province, Pakistan.

Radon — Wikipédia

Les concentrations en radon dans la mine peuvent être élevées : par exemple, les analyses publiées en 2004 [73] faites dans les mines brésiliennes ont mis en évidence des taux de radon dépassant dans toutes le niveau d'action pour les lieux de travail (500 à 1 500 Bq/m 3 d’air, recommandés par la Commission Internationale de ...

(PDF) REVIEW: Natural radioactivity measurements in ...

128 191–7 Rehman S, Imtiaz N, Faheem M, Rehman S and Matiullah 2006 Determination of 238 U contents in ore samples using CR-39-based radon dosimeter—disequilibrium case Radiat. Meas. 41 471–6 Singh S, Rani A and Mahajan R K 2005 226 Ra, 232 Th and 40 K analysis in soil samples from some areas of Punjab and Himachal Pradesh, India using ...