Application of the Dose Limitation System to the Mining and Milling of Radioactive Ores, Issue 82 |
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Page 35
... air is usually significantly reduced by driving intake and return airways outside the ore to the extremities of the deposit before mining commences . Then , by utilizing retreat mining towards the intake air supply , little air is tied ...
... air is usually significantly reduced by driving intake and return airways outside the ore to the extremities of the deposit before mining commences . Then , by utilizing retreat mining towards the intake air supply , little air is tied ...
Page 44
... airways that usually serve as travel ways and operating openings . Another function is to distribute an adequate ... return airways , if ventilation is not interrupted , a main escape - way or travel way in return air may present a ...
... airways that usually serve as travel ways and operating openings . Another function is to distribute an adequate ... return airways , if ventilation is not interrupted , a main escape - way or travel way in return air may present a ...
Page 45
... air exhausted to the return airway ; The advantage in developing main airways of generous size ( cross - section ) , straight and with the walls , back and floor as smooth as possible to prevent unnecessary friction and resistance ; The ...
... air exhausted to the return airway ; The advantage in developing main airways of generous size ( cross - section ) , straight and with the walls , back and floor as smooth as possible to prevent unnecessary friction and resistance ; The ...
Common terms and phrases
107 cm ducting 220Rn daughters air volumes areas assessment auxiliary ventilation blasting collective dose competent authority considered decay series Dose rate drill drift dust effective dose equivalent electrostatic precipitators ensure Exposure to radon External exposure external radiation facility factors gamma gamma radiation high grade IAEA Safety Series ICRP increase inhalation installation intake air JOB ROTATION Jožef Stefan leakage located maintenance milling of radioactive mineral sands minimize mining and milling mining method open pit open pit mines optimization of radiation optimization procedure Option P.O. Box personal protective equipment Portorož potential practice production programme protective measures radiation exposure radiation protection radiation risk radioactive contamination Radioactive decay radionuclides radon daughter concentrations respirators result return airways S₁ shielding significant stope surface contamination Table tailings thorium tion Total cost Total exposure uranium mines ventilation system WL⚫h work-place workers