Floater Dredging Viability Test in Yukon Permafrost

A report from the Government of Yukon details an experiment testing the viability of floater dredging for placer gold in permafrost. The work involved digging a pond on a terrace above the Fortymile River and measuring thaw rates and excavation efficiency. The report was last updated on April 17, 2026.

Use Cases

• Modeling thaw propagation rates in permafrost based on water seepage experiments
• Optimizing excavator tool selection for frozen gravel based on tests of spade-type abrasion teeth
• Planning sustainable mining operations based on findings about cut face length and thaw rate requirements
• Analyzing ground stability in permafrost mining based on observations of uneven thawing and face organization

Strengths

• Report provides specific quantitative findings, such as a thaw rate of at least 2 feet in 24 hours and water penetration of at least 12 feet.
• The experiment tested concrete operational parameters, including a cut face slope of 30° and a requirement for a 600-foot face for a 100 yd/hour operation.

Limitations

• The underlying data (e.g., raw measurements, column definitions) is not provided; the dataset consists solely of a descriptive report.
• Row count and data scale are unknown, which may limit suitability assessment for quantitative analysis.
• The report concludes that factors limit applicability, suggesting the findings may not be universally generalizable.

Provenance

Source

Government of Yukon

Collection Method

Experimental field work involving digging a pond, operating a floater dredge, and measuring thaw rates.

Freshness

Last updated 2026-04-17 15:55:47.715679

Geography

Permafrost terrace above the Fortymile River, Yukon, Canada.