Cornerstone Capital Resources Inc. announces the following update on the Cascabel copper-gold porphyry joint venture exploration project in northern Ecuador, in which the company has a 15% interest financed through to completion of a feasibility study. 12 Rigs now onsite and operational at Alpala Target; An additional 13,384m of drilling completed since release of Alpala MRE - Over 120,000m of drilling scheduled for the next 12 months; Additional targets at Alpala Northwest, Alpala Southeast, Alpala East, Aguiñaga, Trivinio, Moran, Carmen, Cristal and Parambas; Study Manager selection and recruitment underway for Preliminary Economic Assessment ("PEA") Alpala drilling targeting high grade extensions to Alpala Resource; Drill holes have been targeted to add zones of high-grade where joint venture partner and project operator SolGold believes the existing resource model has under-estimated average CuEq grades and volumes, and will benefit from an increase in drill hole density; Hole 33 high-grade resource extension: 824m @ 0.80% CuEq, incl. 576m @ 0.93% CuEq from 736m; Drilling cost reducing to $530/m; Rig to Resource" integrated data capture protocol to expedite revised mineral resource calculations; Regional update in preparation and Aguiñaga modelling nearing completion and drilling expected to commence in second quarter. SolGold currently has 12 rigs that are progressing holes: 29-D4, 32-D3, 33-D1, 34-D1, 36, 37, 38-D1, 39, 40, 41, 42 and 43. Hole 33 assay results from ALS Global confirm Mineral Resource extension along the up-dip, western side of the deposit, returning: 824m @ 0.80% CuEq (0.54% Cu, 0.42g/t Au) from 736m, including. 576m @ 0.93% CuEq (0.61% Cu, 0.51g/t Au) from 850m, and 206m@ 1.32% CuEq (0.75% Cu, 0.92g/t Au) from 1218m. Hole 33-D1 has drilled across the mineralized body from northeast to southwest, intersecting intensely mineralized diorite porphyry from 1042m to 1161m and is continuing onwards to test for extensions to the west of a late-mineralization "D20" diorite dyke. Assay results are pending. Hole 36 has intersected an intensely mineralized diorite intrusion and is expected to extend the Mineral Resource down dip and to the northeast. Hole 41, drilled from the northeast side of the deposit and collared near the Parambas anomaly, has intersected very shallow epithermal (low temperature) mineralized vein sets between 60m and 100m depth. Additional porphyry style mineralization is interpreted at depth, on the northeast flank of the Alpala Deposit. Nine other holes (29-D4, 32-D3, 34-D1, 37, 38-D1, 39, 40, 41, 42 and 43) have yet to reach target depth. Significant Mineral Resource extensions at Alpala are being targeted along the open margins of the deposit and at depth. The Aguiñaga target is anticipated to be drilled using a man portable rig during the second quarter of 2018. A series of three holes will test key elements of geochemical and geophysical anomalies: North-easterly- and north-westerly-oriented zones of strong molybdenum anomalism. Coincident high Cu/Zn, Mo, Cu, and Au in soil geochemical highs. A deep root in the magnetic model. Coincident high chargeability and magnetic features, interpreted to be a magnetic, chalcopyrite-rich potassic core to a porphyry system. Vertically extensive cylindrical features in the chargeability and resistivity surveys.