… compacting, extracting or boring machinery, for earth, minerals or ores; pile-drivers and pile-extractors; …
Explanatory notes
… compacting, extracting or boring machinery, for earth, minerals or ores; pile‑drivers and pile‑extractors; … CUTTING OR DRILLING MACHINERY This is mainly used in mining, well‑drilling, tunnelling, quarrying, clay cutting, … excludes : (a) Hydraulic guns designed for dislodging minerals (e.g., gold bearing sands) from hill sides, etc., …