It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.
By the engineering checking of the selected target section we found the gold mine in both prospecting trench and randing, and gained 1.5t gold resource.
Gaultier did all that by working in his stock characters and garments: the matelot, the androgynous lady in the pantsuit, the trenches, the smokings, the corsets.