GoldMining Inc.

2022 Sample Preparation Procedures

The drilling cores obtained were transported in metal boxes daily from the drilling site to the Company's base camp, where the facilities of the La Mina project are located.

At the drill rig, the core was cleaned and washed, and placed in metal core boxes marked with "Start" and "Finish" and arrows pointing downhole direction. The core boxes were marked with the drill hole information and wooden core blocks were placed at the end of each run containing the depth (in metres) of the hole marked.

When the boxes were received daily at the base camp, the core was cleaned of mud, oxides, and grease left over from the drill cores. Subsequently, a verification of the information in the wooden blocks and core boxes was made checking the depths, hole information, and the recovery. In case of any inconsistency in the marking of the boxes, runs, or losses of cores, it was reported to the project geologist to require the drilling contractor and solve the problem.

Subsequently, photographs were taken of the wet core boxes with a sign indicating drill hole number, box number and depths. Once the boxes were photographed, they were laid down in the logging tables to perform the core logging. All core was logged geotechnically and lithologically in paper copies and then entered into a laptop computer.

After the detailed geological logging, the longitudinal cutting line is marked by the geologist, and the core is taken for cutting. Samples are nominally cut every two meters. However, the sample length will be shorter when there were changes in lithology or alterations. The drilling cores are cut into two halves using a standard fixed Freemasonry electric saw or quartered depending on the condition of the cores under the supervision of the geologist. One of the halves is left for future reference in the core box and the other half is packed in double plastic bags marked on the outside with the sample number ID and inside the bag, a tag with the sample ID was placed. Each bag was secured and stored in a restricted access site and then shipped to the laboratory for sample preparation and analysis. It is important to note that none of the cutting or logging technicians were allowed to wear jewelry to avoid contamination of the sample.

Batches of shipping samples are collected in groups of 20 to 75, including QC samples. Each batch had at least one blank and one standard, which were inserted randomly by geologists within the numbering sequence. Blanks, standards and duplicates samples were inserted in the sample stream as follows: Blanks (2%), standards (2%), preparation duplicates (2%), and field duplicates (2%). These batches were sent by a company vehicle to the ALS Minerals laboratory for preparation in Medellín and then sent for assaying and ICP analysis to ALS Peru. The samples sent to ALS Peru followed the following preparation and analysis procedures: