All of this can be done, Mr Heydon believes, for about half as much as opening a new landbased mine.
海登相信,只要花费相当于一个陆地矿井一半的费用,所有这些就都可以实现。
3
The only problem was, nobody at the station had an arm small enough to actually reach in through the two-and-a-half inch opening and pack grease around the bearing.