Val-d’Or, QC – May 1, 2023 – Bonterra Resources Inc. (TSX-V: BTR, OTCQX: BONXF, FSE: 9BR2) (“Bonterra” or the “Company”) is pleased to announce more results from the now completed infill and expansion drilling campaign at the Barry underground project, which holds 0.5 million ounces of Measured and Indicated Mineral resources and 0.7 million ounces of Inferred Mineral resources according to the last mineral resources estimate (the “2021 MRE”, see press release dated June 23, 2021). The primary goal of this campaign was to convert mineral resources to a higher confidence category and enhance the interpretation and grade continuity of the mineralization, primarily in the upper section of the deposit. In total, 31,349 metres (“m”) (91 holes) of infill drilling has been completed from surface since August 2022. The Company has received assays for 80 holes so far, including the holes disclosed in this release (see press releases dated November 15, 2022, December 12, 2022, and March 27, 2023, for previously released holes).

Highlights include:
6.2 g/t Au over 7.7 m, including 12.8 g/t Au over 2.8 m and 13.0 g/t Au over 0.5 m inhole MB-23-598
26.3 g/t Au over 1.2 m, including 38.1 g/t Au over 0.7 m in hole MB-23-600
4.5 g/t Au over 4.2 m, including 20.3 g/t Au over 0.5 m in hole MB-23-592
1.6 g/t Au over 6.0 m, including 2.2 g/t Au over 2.0 m in hole MB-23-613
Marc André Pelletier, President and CEO commented: “The results reported today are encouraging for many reasons. Holes MB-23-598, MB-23-600 and MB-23-592 intercepted mineralisation consistent with the high-grade ore shoots in the 800 Zone. Meanwhile, hole MB-23-613 confirmed the extension of mineralization from the 800 Zone approximately 150 m further than the known mineralized envelope and suggests that there is continuity of the mineralization at depth. With the conclusion of the winter drill program at Duke, we have started a greenfield exploration program at Barry North-East and a more focused program at Panache South. Bonterra remains committed to continuing to explore the Urban-Barry camp where several million ounces of gold have already been discovered to date.”

Exploration Updates
The drill program at the Duke property (“Duke”), a joint venture with Osisko Mining Inc. (“Osisko”), consisting of 10 holes covering 3,387 m has been completed on schedule (see press releases dated March 6, 2023, and March 27, 2023). Also, a short drill program of two holes totaling 706 m was completed just before the spring thaw at the Nelligan property near the Bachelor Mill Complex.

Following the completion of the Duke and Nelligan programs, the Company has allocated one drill rig to its Barry North-East regional exploration program, which consists of 11 drill holes covering 3,200 m. This program targets polarization anomalies along the Mazeres fault corridor, located 3 kilometers (“km”) to the northeast of the Barry deposit (See Figure 3). So far, three drill holes covering 969 m have been completed.

The Company will also commence a 3,500 m exploration and follow-up drill program at the Panache South target. The area includes the historical Panache South showing with 12.9 g/t Au over 0.5 m and 3.2 g/t Au over 0.4 m. In 2021, the Company drilled 4,383 m at the Panache South target and intersected significant gold mineralization, including 5.5 g/t Au over 1.5 m, including 16.2 g/t Au over 0.5 m, 23.1 g/t Au over 2.3 m, including 62.3 g/t Au over 0.8 m, and 30.6 g/t Au over 1.5 m, including 91.4 g/t Au over 0.5 m from shear-hosted quartz carbonate vein systems (Panache South drill hole references in this paragraph are from the Company’s press release dated March 1, 2022).

Diamond Drilling Results Highlights:
see & read more on
https://btrgold.com/2023/05/01/bonterra-intersects-6-2-g-t-au-over-7-7-m-including-12-8-g-t-au-over-2-8-m-at-the-barry-underground-project-and-provides-exploration-updates/