How observations become evidence—and how evidence earns its authority. Follow samples, maps and models to the boundary between what is known and what is inferred.
Environmental assessment establishes conditions, receptors and commitments before construction. This epistemics essay examines how those records become land-use limits and why an unmeasured baseline cannot be reconstructed after the alteration.
A laboratory result can be precise and still be the wrong number for a mine decision. This article follows sample preparation and QA/QC into block models and cut-off logic, showing where a measurement becomes an economic boundary.
A specimen is evidence of an organism, a depositional setting and a chain of losses between them. The article uses the Frenchman Formation as a Saskatchewan case to show why absence and abundance in fossils are inverse problems before they are evolutionary stories.
Colour, clarity and cut are observations; treatment and geographic origin are inferences requiring different evidence. This essay uses Saskatchewan’s diamond-bearing indicator-mineral work as the site for a general lesson in analytical identification.
Saskatchewan’s mapped formations and sequence frameworks are both useful, but they answer different questions at different scales. The article explains why a coloured polygon cannot supply a continuous vertical record beneath cover.
McArthur River, Key Lake, Cigar Lake and McClean Lake show why a mine, a mill, an operation and a corporate asset cannot be treated as interchangeable. The article makes identity errors visible where ore, custody, licence and portfolio cross boundaries.
Geochemical anomalies become valuable when several sample media, element associations and geological expectations converge. This essay follows that evidence into exploration spending and shows why an attractive anomaly can still fail every later decision gate.
A drill programme produces evidence in stages; NI 43-101 turns some of that evidence into a public statement with a deadline, a competent person and categories that cannot be skipped. The article examines the boundary between an orebody and the claim investors are allowed to receive.
Granite, gneiss and quartzite are useful names, but each compresses a history of minerals, texture, pressure, temperature and alteration. This essay uses exposed Precambrian rock in northern Saskatchewan to distinguish observation from reconstruction.
A geophysical survey makes a physical contrast visible; a drill hole tests whether the contrast has the geological meaning assigned to it. The article explains why the inference between the two is an inverse problem, not a pipeline to certainty.
A diffraction pattern can strongly constrain crystal structure, but it is not a perfect fingerprint and twins can make different structures share a measurement. This essay links crystallographic evidence to the mineral names used in a Saskatchewan core description.
At Cigar Lake, uranium sits where porous sandstone meets far older basement. The article shows why a missing interval can be a fluid pathway, a chemical boundary and eventually an orebody, while still leaving its exact history underdetermined.
Grain size, beds and diagenesis create the volume that a resource estimate tries to classify, while mining vocabulary assigns thresholds to what enters the plan. The article explains why a head grade or cut-off grade cannot replace a facies model.