Выражение встречается в следующем контексте:

IP test program designed to look down to a 600m depth is recommended prior to
further drilling of #10 vein. An initial wide spaced test program will indicate if a
large system exists or similar to condemnation drilling proves that it doesn’t.

The area between 7,000N and 12,000N should be covered with EW lines initially
at 1000 ft centers. The lines would extend from the deposit to about line E
2,000 bisecting the adit.

Заранее спасибо