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sidewall core mechanical

notation 8.2 more like this
definition Mechanical tools use hollow rotary drills to cut and then pull out core plugs. Up to 75 plugs can be recovered on one run. With full recovery, cores from typical percussion tools are 2.5 cm in diameter by 4.4 cm long, while those from mechanical tools are 2.3 cm in diameter by 5 cm long. The latter are also known as rotary sidewall cores. more like this
source This vocabulary more like this
Resource original
Concept original
broader original
narrower sidewall_core_mechanical original
in scheme boreholedrillingmethod original
is primary topic of sidewall_core_mechanical