GoldMining Inc.

Sampling, Analysis and Data Verification

There is no available documentation about sampling and analysis by Cominco. Previous operators Kennecott, Geoinformatics, and Kiska used industry standard practices to collect, handle and assay soil, rock and core samples collected during the period 2004-2011. These procedures are documented in detailed reports describing pertinent aspects of the exploration data collection and management.

All assay samples were assayed at either the Alaska Assay Laboratory (2004 and 2009) in Fairbanks, Alaska, or the accredited ALS Minerals (formerly ALS-Chemex) laboratory in Vancouver, British Columbia for all other years. Sample preparation was accomplished in Alaska, either at the Alaska Assay Lab or ALS-Minerals preparation lab in Anchorage, Alaska. Samples were assayed for gold by fire assay and a suite of elements including silver and copper by aqua regia or multi-acid digestion and inductively coupled plasma atomic emission spectroscopy. Operators Kennecott, Geoinformatics, and Kiska used industry standard quality control practices during exploration at Whistler. The Whistler Technical Report discloses that analysis of the QA/QC data indicates the assay data is of sufficient quantity and quality for resource estimation.

Sue Bird, P.Eng., of MMTS, visited the Whistler Project site on September 14, 2022, and again on August 6, 2024. No observations contradicting previously published information were made. The assay database did not have certificate numbers attached to the sample IDs. This was accomplished by the author of the Whistler Technical Report to the extent possible. Certificate checks revealed some minor errors which were corrected prior to resource modeling. Not all assay data in the database is fully supported by certificates and QA/QC. However, the percentage of data fully supported by certificates and QA/QC is consistent with similar projects that have the majority of drilling completed before 2010 and have undergone several changes in ownership. In the opinion of the QP, sampling preparation, analysis, and security by previous operators are consistent with industry standard practices. Review and analysis of the assay database and QAQC data shows the assay database is of sufficient quality for resource estimation.

Metallurgical testing had been carried out in three phases starting with the 2004/2005 preliminary testing in Salt Lake City under the general supervision of Kennecott and culminating in the two phases under Kiska conducted at G&T Laboratories in Kamloops during 2010 to 2012.

Whistler Deposit preliminary metallurgical testwork included gravity concentration or flotation to recover the copper and gold. From the metallurgical testwork results and subsequent analysis it appears that the Whistler Deposit is metallurgically amenable to a conventional flotation route to produce saleable high quality copper concentrates with gold credits, despite the low head grade, and that the levels of recovery and upgrade for both copper and gold are relatively insensitive to feed grade. We believe that there are no processing factors or deleterious elements that could have a significant effect on potential economic extraction.

The preliminary testing indicated that the Island Mountain material tested is amenable to copper recovery by flotation and that the gold is relatively free milling. The results indicate that in the range of 90% of the potential gold may be recoverable by either whole ore leaching or a combination of flotation and leaching of the tailings.

Further flotation work is expected to improve both potential copper and gold recoveries to concentrate.

For both deposits further metallurgical development and assessment work is required to develop the best flowsheet with respect to capital and operating costs, metal recoveries and overall economics.

As of the date hereof, no metallurgical testing has been carried out on rocks from the Raintree West Deposit, however, given the similarities in geological setting, host rock, mineralization and alteration between Raintree West and the Whistler Deposits, it has been assumed by GoldMining that metallurgical processes and metal recoveries determined for the Whistler Deposit are a reasonable approximation for the Raintree West Deposit at this time.

Metal recoveries reported for the Whistler Project resource estimate include 83% for copper, 70% for gold and 65% for silver with silver grades below 10 g/t and 0% for silver grades above 10 g/t.