How a company gets onto this table
Every row is a name written on a government drill-hole record. We match that name to a listing only when it is identical to the issuer name in the company directory under the same rule the financial register uses. There is no fuzzy matching and no matching on a shared word, because a near-miss here would attribute one company's drilling to another.
That makes the table conservative in one direction only. It undercounts: a company that drilled under a former name, through a subsidiary, or before it listed does not appear. It does not overcount, and it never infers a property interest from a name.
The dates and lengths are as reported. Where a source record carries no usable drilled date or no length, the row says how many holes that affects rather than filling the gap. Search all 33,490 records ↗ · Mineral occurrence register ↗ · Coverage and source limits ↗