Several ore chutes longer than 200m were used and level adit mining electric locomotives or 1 132-meter-width long distance belt conveyers were used to convey the ore so as to reduce the ore transportation distance and cost.
英
美
- 采場(chǎng)內多條高度大于200m放礦溜井,平硐電機車(chē)或1 132m長(cháng)距離膠帶機輸送礦石,降低采場(chǎng)礦石運輸距離和成本。
