It actually takes place on an ongoing basis in the US. When a mine is closed, there are funds that have been set aside for restoration of the mined area. Land is contoured, topsoil placed where it is needed, and lands planted with vegetation that will grow in that area.
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What is the damage? If they are plugged with calcium it may be possible to have them reamed out. If they are warped. You need a new one. Ken
The land is contoured to prevent erosion. Topsoil is replaced, and seeded/planted to grow new vegetation. Provision is made for drainage of rainwater. Current mines are required to reclaim mined land, and funds are provided to reclaim older mines.
The surfaces can be passivated with polymers but existing damage probably cannot be repaired.
Roofs and windows get resurfaced and replaced. Damaged parts of buildings and entire buildings are rebuild based on standard construction and repair methods.
Micro strip lines,Parallel strip lines,Coplanar strip lines,Shilded strip lines.