MIA quarry tour explores Georgia stone quarries
For years, the Marble Institute of America (MIA) has led study tours to quarries around the U.S., Canada and abroad. The 2014 tour took place in Georgia — a state rich in both historic and modern day stone …
Natural Stone Institute
Radon Exposure No Concern to Quarry Workers. April 2014 — In order to extract the beautiful granite rock that adorns so many countertops, floors and building facades in the United States, skilled quarry workers must …
Assessment of occupational exposure in a granite quarry …
In order to assess the risk, a granite industry with a quarry and processing factory was selected to assess the occupational exposure. Three main potential pathways were observed: external irradiation, inhalation of granite dust, and radon exposure. The external dose rate was similar to that in a nearby farming area.
Are Granite Countertops Hazardous To Your Health?
Radon Exposure No Concern to Quarry Workers. April 2014 — In order to extract the beautiful granite rock that adorns so many countertops, floors and building facades in the United States, skilled quarry workers must saw or blast the raw granite into blocks to remove it from the quarry location for further fabrication. Given that soil and rock slowly …
What is Radon and How are We Exposed to It? | IAEA
Sometimes together with Radon-220 — a product of Thorium-232 decay — Radon-222 acts as the main contributor to radiation exposure for the public. In terms of the protection to be provided, no differentiation is made between these two causes of exposure. ... Levels of radon can be high in groundwater, particularly in areas of …
Occupational exposure due to naturally occurring …
The rock fragments are further processed at the processing mill (situated near the quarry) into different sizes. Non-nuclear mining and milling industries have the potential of causing radiological problem . Hence, this work aims at assessing occupational radiation exposure due to NORM in the granite quarry industry. MATERIALS AND …
Assessment of Radiation Hazard Indices Caused by Naturally …
region, quarry workers, and construction workers are, therefore, not immune to radiation exposure caused by the quarries. It is suggested that the Nigerian Environmental Protection Agency (NEP A ...
Natural radioactivity measurements in the granite rock of quarry …
The gamma radiation dose for the occupational work in granite mines (Quarry Sites) is due to the granite content of radionuclides which can be estimated by employing a half-infinite source of a homogenous distribution and by considering only the contribution gamma-radiation dose, from the natural radionuclides in the granite.
ENVIRONMENTAL HEALTH & ENGINEERING, INC.
Radon Exposures in a Granite Quarry EXECUTIVE SUMMARY Multiple studies have been published demonstrating that exposures to both radon and direct radiation from granite …
Health And Safety In Quarrying | Agg-Net
the intensity and penetrability of ionizing radiation. Potential exposure Potential exposure means the opportunity to do harm. In assessing the potential exposure to the hazard it is necessary to consider: the proportion of the work-force who are or will be exposed to the hazard (in particular the frequency of exposure and length of time of ...
Occupational exposure due to naturally occurring
The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has been investigated. The activity concentrations of 40K, 226Ra and 232Th were determined using gamma-ray spectroscopy method. The annual effective dose of workers through different exposure …
(PDF) Occupational exposure due to naturally occurring …
Occupational exposure due to naturally occurring radionuclide material in granite quarry industry. Ademola JA. Source Department of Physics, University of Ibadan, Ibadan, Nigeria. jaaademola@yahoo Abstract The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has …
(PDF) Radiation Exposure Level in some Granite Quarry …
Radiation Exposure Level in some Granite Quarry sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria November 2018 DOI: 10.21767/2574-285X.100019
Radiation Exposure Level in some Granite Quarry sites …
Citation:OO (2018) Radiation Exposure Level in some Granite Quarr y sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria. Insights Med Phys Vol.2 No.3:12 Abstract ... Radiation Exposure Level in some Granite Quarry sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria ...
ASSESSING EXPOSURE TO RADON AND RADIATION …
significantly increase exposures and doses of radiation in homes. A comprehensive study was designed to answer this question in a scientifically valid manner. The in-depth …
Occupational exposure due to naturally occurring radionuclide material
The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has been investigated.
Radiation Exposure Level in some Granite Quarry sites …
Citation:OO (2018) Radiation Exposure Level in some Granite Quarr y sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria. Insights Med Phys Vol.2 No.3:12
Radiation Exposure Level in some Granite Quarry sites …
Radiation Exposure Level in some Granite Quarry sites within Ohimini and Gwer-East Local Government Areas of Benue State Nigeria Ode Omenka Published Date:
Assessment of Radiation Hazard Indices Caused by Naturally …
Abstract The existence of naturally occurring radionuclide materials (NORMs) in the rocks may expose the ecosystem inside the building to radiation when such rocks are used as building materials. In view of this, a gamma-ray spectrometer hosted with a broad energy germanium (BEGe) detector was utilized to measure the …
Radon Exposure from Granite: Debunking Health Concerns
Although large amounts of radiation exposure can be harmful to human health, research shows that granite building materials and quarries do not produce …
Assessment of Radionuclides in Selected Granite Quarry …
Granite quarries produce massive amount of dust particles and such dust particles increase the level of Radon gas [9]. The main way of saving the humans from radiation injuries is to protect it from exposure to radiation and this is why radiation monitoring and measurement are very essential in our society today [10].
Investigation of the Radiation Exposure Rate and Noise …
Keywords: Radiation Exposure, Noise level, Quarry site, Radiation survey, Noise survey 1. INTRODUCTION Radionuclides that were part of the original composition of the earth and their progenies emit gamma radiation which contributes to a large share of environmental radiation dose [1]. Although
ASSESSING EXPOSURE TO RADON AND RADIATION …
contributions from granite countertops to radon levels in homes are lower than background levels of radon exposure typically found outdoors and indoors. …
Assessing exposure to granite countertops—part …
Radon gas (222Rn) is a natural constituent of the environment and a risk factor for lung cancer that we are exposed to as a result of radioactive decay of radium (226Ra) in stone and soil. Granite ...
Environmental risk assessment of background radiation, …
The quarry environment is a good scenario of low-level gamma radiation exposure due to NORMs in quarry rocks and soil. Continuous exposure to this low-level radiation overtime by the quarry workers and other people doing business in the area may result to long-term health effects. ... Meanwhile, in granite quarrying soil from Ikole-Ekiti, …
Occupational exposure due to naturally occurring …
The potential occupational exposure in granite quarry industry due to the presence of naturally occurring radioactive material (NORM) has been investigated and the results obtained were much lower than the intervention exemption levels given in the International Commission on Radiological Protection Publication 82. The potential …
What about radon and radioactivity in granite countertops?
It is prudent to limit your family's exposure to radon whenever possible. Commonly employed mitigation techniques can reduce the radon level coming from soil …
Radiation Dose of Workers During Fabrication of Granite
Radiation Dose of Workers During Fabrication of Granite Interpreting Radiation Dose Radiation dose was calculated in units of millirem per year (mrem/year). This is a standard exposure metric and can be used to compare the estimated dose for granite workers to published 'safe' levels of exposure.
(PDF) Assessment of Radionuclides in Selected Granite Quarry …
The assessment of radionuclides in selected granite quarry sites in Ohimini and GwerEast Local Government Areas of Benue State was carried out using a 76x76mm NaI (TI) detector crystal optically ...
ASSESSING EXPOSURE TO RADON AND RADIATION …
Assessing Exposure to Radon and Radiation from Granite Countertops November 21, 2008 Prepared by Environmental Health & Engineering, Inc. Page 2 of 55 (NCRP 1993). The dose measurements are summarized in Figure 1.1 in order of decreasing market share.