Blast hole


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a hole in the bottom of a pump stock through which water enters.

See also: Blast

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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now disintegrated, a blast hole for a door she walks right through.
The FRAGMENTOR has incorporated a retaining device that will hold the self-contained cartridge within the blast hole. This allows for ease of use in both horizontal and overhead use, ideal for work in underground mining.
The stress wave initiates cracks around the blast hole and near free surface, and the longer duration gas pressure penetrates these initial cracks and causes their further extension, finally driving the movement of fractured rocks [9, 10].
In Section 4, the degrees of coal seam damages caused by LCDPTE and the gas drainage effects at different spacings between the gas drainage hole and the blast hole are numerically investigated in detail.
In order to make cracks form successfully in adjacent blast holes and reduce the damage of remaining rock mass to minimum, the construction site usually meets the requirements of excavation by means of controlling the charging of the blast hole and blast holes spacing.
A SUICIDE bomber blew himself up on a jet and was sucked out of the blast hole after smuggling TNT aboard in a wheelchair, police believe.
WAFA correspondent reported that an F-16 warplane targeted with at least a missile a location in the Bedouin village of Umm al-Nasr, north of Beit Lahia, causing extensive damage and a massive blast hole in the area.
A Reuters correspondent at the scene saw a blast hole in the playground of school number 57 in Donetsk's Kiev district and another crater in a nearby street.
North Bay-based Rotacan is active in the design, manufacture and sale of rotary blast hole drill bits, drill pipe and other ancillary products used mainly in the open pit mining industry.
The CPA 225E drilling attachment is easily transported between jobsites, delivering optimal drilling power in the blast hole, slide stabilization, tunneling, anchor bolting and other long-reach applications.
Precise, a fast-growing company which began manufacturing their own line of rotary blast hole bits to the exploration market only two years ago.