6–4 Supplemental Plats: When supplemental plats are required segregating mineral surveys, all such surveys must be segregated. Again, it is desirable that mineral surveys embracing invalid claims be cancelled. The need to lot a cancelled mineral survey will also require a supplemental plat.
6–5 Correcting Errors in Patented Mineral Surveys: As a general rule, the record of a patented mineral survey should not be changed or amended. When such errors are discovered, a pencil notation on the index card and/or on the field notes may be appropriate. Reported errors generally stand on their own merit and are contained in the field notes of the reporting survey.
FIG. 8
GLOSSARY OF MINING TERMS
ADIT: a horizontal entry into a mine with one opening to the surface, commonly and erroneously called a tunnel. (A tunnel is open at both ends.)
ALLUVIUM: unconsolidated sedimentary deposit, e.g. stream bed of sand and gravel.
ANTICLINE: a convex fold in sedimentary beds of rock (opposite: syncline).
APEX: top of a vein or lode.
ASSAY: a test to determine the quantity of mineral in a given sample. May be by a miniature smelting process in the laboratory, called a fire assay; or by use of chemicals, called a chemical or wet assay.