Auger

Japanese: auger
Auger

...The drilling speed is about 1m per minute in granite.
[Rotary rock drill]
There are large ones (mainly for limestone mining) that are mounted on crawlers and drill holes 65 to 150 mm in diameter and 10 to 30 cm deep, but the most commonly used one is called an auger, which drills small blast holes in soft rocks such as coal and mudstone. Augers are often small and handheld, and can be driven by compressed air motors or electric motors.

*Some of the terminology explanations that mention "auger" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…さく孔速度は,花コウ岩で毎分1m程度である。
[回転式削岩機]
 クローラーに積んで孔径65~150mm,深さ10~30cmをさく孔する大型のもの(主として石灰石採掘用)もあるが,最も普通に用いられているのは,石炭や泥岩など軟弱な岩石に小孔径の爆破孔をさく孔するオーガーaugerと呼ばれるものである。オーガーは小型で手持ちのものが多く,圧気モーターで駆動されるものと電動機で駆動されるものとがある。…

※「auger」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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>>:  Auger, P.

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