bolthole

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bolthole

[′bōlt‚hōl]
(mining engineering)
A short, narrow opening made to connect the main working with the airhead or ventilating drift of a coal mine. Also known as bolt.
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References in periodicals archive ?
* Durable polyamide housing with corrosion-resistant bolt hole spacers
[36] carried out a low-cycle repeated loading test on bolted beam-column joints with a cantilever beam prefabricated and welded to the column in the factory, in which the bolt hole is a slot for assembly convenience.
(importance economically, socially and culturally, domestically and internationally), something on the first page (yes, I didn't get too far)--heck, the first couple lines--caused me to wonder: "Bolt holes. That was the main concern, the only concern, really, of one senior executive at General Motors right after the company emerged from bankruptcy."
Adam Gontarek; BOLT HOLE; AuthorHouse (Mystery) $17.99 ISBN: 9781438939803
Then apply a thick bead of silicone tub-and-tile caulk around the bolt hole, over the crack and around the edge of the acrylic patch.
Inspection revealed the left main gear actuator (p/n 9882015-2) housing was cracked across the forward attach bolt hole. The cracked housing allowed the piston rack to jump gears on the pinion gear attached to the main gear leg.
The design can also be used to replace slotted bolt hole styles that have less precise adjustment capability, the company added.
The unit for milling comes with bolt hole pattern calculations for full and partial circles with graphics, zero reset and preset features, tool diameter compensation, near zero warning, and other operating features.
Consider downsizing - if you keep a bolt hole in the UK, you'll have an option if things don't go well.
Just 15 miles from Carmarthen and 25 miles from Swansea, Llandeilo has become a popular place for media types and those looking for a country bolt hole within commuting distance of Cardiff and beyond.
Boart Longyear has designed and patented a new freestanding, self-supporting, remotely operated roof bolt hole drilling unit.
The casters are available with either a rectangle top plate or bolt hole. The swivel-only version fits a range of rubber expanding plugs and threaded stems.