Artificial ground freezing of the McArthur River uranium ore deposit
Bibliographic record
Abstract
The ore body at the McArthur River uranium mine is located underground between the 530 m and 640 m development levels and is situated in a brecciated conglomerate zone along a fault with fractured, silicified sandstone above, and pelitic basement rock below and on one side. Water transport in the region is mainly through cracks and fissures in the sandstone and the water pressure is hydrostatic to the surface (i.e., approximately 5500 kPa). In order to prevent high-pressure water flows during mining, it has been necessary to artificially create a frozen wall barrier around the perimeter of the ore body. The geology of the ground that the freeze pipes pass through is not consistent. Many of the 105 m long freeze pipe holes are drilled through rubble, flowing sand, and squeezing clay zones, ending up in hard basement rock. This paper focuses on the need for ground freezing and the challenges associated with installation of the freezing system.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".