The study estimated the radiological exposure levels in a mining area for miners in the Beylikova-Sivrihisar (Turkey) complex ore site containing ²³⁸U, ²²⁶Ra and ²³²Th. Sixty samples were collected from the study area based on a geologic map. The radionuclide activities were measured using a 78.5% efficient n-type HPGe detector. The measured mean activities were 1871 ± 38 Bq kg⁻¹ for ²³⁸U, 1749 ± 5 Bq kg⁻¹ for ²²⁶Ra, 3467 ± 9 Bq kg⁻¹ for ²³²Th and 309 ± 2 Bq kg⁻¹ for ⁴⁰K. From the measured results, the external effective dose was calculated to be max. 3.80 ± 0.03 mSv y⁻¹ (mean: 2.04 ± 0.03 mSv y⁻¹) for inside gallery and max. 7.59 ± 0.05 mSv y⁻¹ (mean: 4.08 ± 0.05 mSv y⁻¹) for outdoor. Additionally, the external exposure index was calculated to be H_ex = 33.5 ± 0.2(mean: 18.2 ± 0.3) and internal exposure index to be H_in = 45.9 ± 0.3 (mean: 22.9 ± 0.4). The results indicate that additional radiation protection measures should be taken during the mining process if an opencast mining is implemented in Beylikova complex ore deposit.

中文翻译：

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基于238U，226Ra，232Th和40K活度测量值的矿区放射线暴露水平估算：土耳其Beylikova-Sivrihisar复杂矿场的案例研究。

这项研究估计了Beylikova-Sivrihisar（土耳其）复​​杂矿区矿工在一个矿区的辐射暴露水平，该矿区含²³⁸ U，²²⁶ Ra和²³² Th。根据地质图从研究区域收集了60个样品。放射性核素活性是使用效率为78.5％的n型HPGe检测器测量的。测得的平均活度对于²³⁸ U为1871±38 Bq kg ^-1，对于²²⁶ Ra为1749±5 Bq kg ^-1，对于²³² Th为3467±9 Bq kg ^-1，对于⁴⁰ Th为309±2 Bq kg ^-1根据测量结果，外部有效剂量被计算为最大。内部画廊的3.80±0.03 mSv y ^-1（平均：2.04±0.03 mSv y ^-1）室外为7.59±0.05 mSv y ^-1（平均：4.08±0.05 mSv y ^-1）。另外，外部暴露指数经计算为H _ex  = 33.5±0.2（平均值：18.2±0.3），内部暴露指数为H _in  = 45.9±0.3（平均值：22.9±0.4）。结果表明，如果在Beylikova复杂矿床中进行露天开采，则在采矿过程中应采取额外的辐射防护措施。