Contaminated rock and mine aggregates (excavated bedrock, gravel, rubble, slag and spent shale);
وهناك مشكلة أخرى آتية من هذه انشطة هي خراب أحواض انهار بسبب تحريك ميين اطنان من الحصى والرمال والتراب خل أنشطة عمال التعدين.
A second problem arising from these activities is the river-bank destruction caused by the movement of millions of tons of gravel, sand and soil gouged by the miners' activities.
إن معظم تلك الرواسب السطحية عبارة عن رواسب غير متداخلة مثل الحصى والرمال والطمي والصلصال وتكون تلك الرواسب على الشواطئ رقعًا رقيقة نسبيًا وعادة ما تكون متقطعة.
Most of these superficial deposits are unconsolidated sediments such as gravel, sand, silt and clay, and onshore they form relatively thin, often discontinuous patches.
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