Two problems discussed at recent meetings: The bedrock in the area weathers easily, so many paths dug out by the engineers do not hold asphalt coatings. It was agreed that as soon as a roadway was built, it would be coated with concrete to prevent erosion.
例如：當地岩層風化情形嚴重，開挖後常立刻剝落；經討論後，他們決定開挖後馬上填土，以封住岩盤，問題就解決了。