I don't think we will be looking at heavy machinery (prohibitive cost of getting it up the gravity well) or many current technologies. It is also unlikely to have a huge manpower component.

More likely we will establish a small research station on the moon, with a great deal of automated manufacture (think 3D printing) using lunar materials.

Some of the mining we do will be excavation for underground habitation purposes. This activity will probably where we learn more about manipulating and processing lunar materials.

SO far, "we don't know what we don't know".

We have so much to learn, and will really only begin to figure stuff out when we get there and begin a lunar habitation.