The depth of the shaft is 520 yards.

这个通道的深度是520码。

《柯林斯英汉双解大词典》

Not only is the escape shaft ready, but the special capsule that was sent down to rescue the men has been tested to a depth of 610 metres, and the Mining Minister Laurence Golborne says all went well.

不仅营救巷道做好了准备，用于搭救被困矿工的特制救生舱也在地下610米的深度进行了测试。 矿务部长戈尔本(Laurence Golborne)表示一切工作进展顺利。

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Measure and record shaft diameter, stuffing box bore and box depth.

测量并记录轴径，填料函孔径及深度。

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According to Golborne, the first stage of drilling on Plan B has reached a depth of 1, 640 feet (500 meters) and will pierce the ceiling of the mine shaft where the men are trapped this weekend.

CNN: STORY HIGHLIGHTS