Mine coordinate system. Cave surveying surface grids. Cave surveying orientation grids. Cave surveying cave grids. Geometric bases of local surface and underground measurement grids. Measurement and representation of geotechnical structures. The geometric realisation of a geotechnical project, placing stakes and the calculation of accuracy.
Geotechnology and the Environment (UN)
Ooops...It looks like you're using an old version of your browser.
For the best experience, please update your browser or use alternative options as Mozilla Firefox and Google Chrome.