Sonoro Gold Corp. reported results from an underground channel sampling program recently completed at its Cerro Caliche gold project in Sonora, Mexico. The program was conducted as part of the company's plan to develop a proposed heap leach mining operation as outlined in an updated Preliminary Economic Assessment dated June 23, 2022.

Samples were obtained from a historic underground tunnel at the Cabeza Blanca mineralized gold zone, located in the southwestern part of the property. An electric rotary handheld saw was used to acquire 34 quality continuous channel samples of vein and breccia material. Saw cuts were approximately four to six centimeters (cm) deep cut perpendicular to the vein trend.

Highlights include 2.0 meters averaging 7.863 grams of gold per tonne (“g/t Au”) across the vein with 3.5 meters averaging 3.071 g/t Au over the five saw cuts along the vein segment. All reported intervals are true measured widths and all material was surface oxidized with the deepest samples collected approximately 25 to 30 meters beneath the terrain surface. Results provide important geological data from a 100-meter section situated along the south end of the Cabeza Blanca vein zone as it enters the El Colorado mineralized zone.

The current resource estimate classified this 100-meter section as an inferred resource, but the underground sampling results, together with over 7,200 meters of new drilling data, will be included in an updated resource calculation being completed on the project. The Cabeza Blanca vein zone has average mineralized widths of up to 29 meters, inclusive of footwall and hanging wall mineralization. Two historic tunnels were developed in the 1950s along the Cabeza Blanca vein, with the northern tunnel continuing approximately 600 meters on a 10 northwestern trend and the southern tunnel continuing approximately 350 meters on a 15 southeastern trend to the El Colorado zone.

The southern tunnel splays into two distinct tunnels at the midway point and the sampling program was completed in the eastern splay. The western splay was not sampled.