Overall, Layson says the PC138 was the kingpin. “We spent 4,000 hours digging that waterhole, working shifts. 机器从未停止. 我们什么都用它.”
“The PC138 was the only machine on site that could move those large boulders.”
The project placed over 3,千吨巨石s. 其中一些重达15000磅. “Occasionally we used the PC88 and PC138 together to lift them into place.”