# Cosa Reports Anomalous Radioactivity in Multiple Drill Holes at the Murphy Lake North Joint Venture with Denison Mines

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/cosa-reports-anomalous-radioactivity-in-multiple-drill-holes-at-the-murphy-lake--bbfbaf79-0a2d-4335-a49e-47cc1e5b384c

Original source: https://money.tmx.com/en/quote/COSA/news/6756788138328510/cosa-reports-anomalous-radioactivity-in-multiple-drill-holes-at-the-murphy-lake-

Publisher: tmx

Original announcement: 2026-04-13T12:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Cosa Resources Corp.

- Ticker: COSA

- Exchange: TSX

- Region: Saskatchewan

- Primary commodity: Uranium

- Secondary commodities: None reported

- Document categories: Drill results

- Extracted: 2026-09-13 18:54:20 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

Cosa Resources has reported anomalous radioactivity in multiple drill holes at the Murphy Lake North Project in Saskatchewan. The radioactivity was detected using a handheld spectrometer and is associated with significant hydrothermal alteration and structural corridors, with assays currently pending.

Reasoning: Discovery of anomalous radioactivity in multiple holes within a large structural corridor suggests significant uranium potential, though chemical assays are required for confirmation.

- Positive factor: anomalous radioactivity in multiple holes

- Positive factor: significant strike length \(600m east/west\)

- Positive factor: structural and alteration signatures consistent with major deposits

- Positive factor: shallow depth \(~260m\)

- Negative factor: assays are still pending

- Negative factor: radioactivity is measured via handheld spectrometer \(proxy, not assay\)

Facts used in scoring: 0

## Classification and evidence

**QA/QC Disclosed**

Polarity: positive

Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\).

Why it applies: Release mentions use of RS-125 hand-held spectrometer and Imdex EZ Gamma probe for verification.

Evidence · text

> All drill core is scanned with an RS-125 hand held spectrometer to check for radioactivity.

**Step-Out Extension**

Polarity: positive

Definition: Mineralization extended beyond the previously known limit.

Why it applies: Radioactivity remains open for at least 600 metres along strike in both directions.

Evidence · text

> Radioactivity remains open in multiple directions including for at least 600 metres along strike to the east and 600 metres to the west

## Extracted facts

Stored fact records: 0. Some facts used in scoring do not have a stored record.

No stored fact records are available for this extraction.

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.