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| digging trial holes (для обнаружения подземных коммуникаций Lonely Knight); sounding | |||
| pit sampling; pitting; trench work | |||
| digging a hole; sinking a hole | |||
| probing | |||
| sound procedure; test boring; test drilling; test hole drilling; trial boring | |||
| test pitting | |||
| шурфование: 3 phrases in 3 subjects |
| Geology | 1 |
| Oil / petroleum | 1 |
| Road works | 1 |