core hole

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structural clay tile

structural clay tile units
A hollow masonry building unit composed of burnt clay, shale, fireclay, or mixtures thereof, having parallel cells or cores (or both) within a single tile.
References in periodicals archive ?
This drilling programme was extended to include a third core hole to test the Red Cloud vein which has also been completed, added the company.
Gold Reef has submitted split core from its first core hole (R8) to Chemex for processing and analysis.
258 , 262 391-A & 386-B, Rcc Top Jacketing With Rcc Mini Column With Core Hole Column With Core Hole At Br No.
02 g/t Gold beginning at a depth of 60 m in core hole GC11-281, 104.
There is an option of a further core hole to be drilled if results dictate.
To date, the Company has drilled four core holes with encouraging results and plans to drill as many as three production test wells and a fifth core hole during the second half of 2007.
Coal evaluation core hole drilling completed during the 1970s and 1980s by the NSW Government has already identified the distribution and thickness of the coal measures within PEL 433.
In a bid to finance a broader pilot and core hole program at its Karoo Central coal seam gas project in Botswana, Tlou Energy will raise a total of $13.
The second core hole at Mopane ran across more than 38 metres of net coal after it was drilled to a total depth of 504 metres.
Core holes were drilled as twin holes from a series of surface drill stations along 500 meters strike length of the structural zone: one angle core hole from each station to intersect the vein system at 50 meters depth, and a second to intersect the same zone at a depth of 100 meters below the surface.
Regulatory approval has been received to proceed with a 150 core hole drilling program known as Phase II on the Firebag East oil sands exploration permits in northwest Saskatchewan.
On the next fence (section 8860E), a further 40 metres to the east, core hole ZK06-66 returned 2.