Oroco Announces First Sampling Results From Cerro Prieto North Property.

April 30, 2008

VANCOUVER, BRITISH COLUMBIA – April 30, 2008 –Oroco Resource Corp. is pleased to announce the results of a recent mapping and sampling program on its 100% owned Cerro Prieto North claim, part of its Cerro Prieto project in Sonora, Mexico.Highlights of the sampling include:

  1. 2.11 g/t Au and 142.0 g/t Ag over 0.6 meters
  2. 2.18 g/t Au and 134.0 g/t Ag over 1.2 meters
  3. 1.70 g/t Au, 115.0 g/t Ag, 2.26% Pb and 3.17% Zn over 1.0 meter

The southern boundary of the 2,508 ha Cerro Prieto North claim is located approximately two and one-half kilometers north of the historical Cerro Prieto Mine, situated on Oroco’s San Felix and San Francisco concessions, where a drill program is currently underway.  The northwest striking structural zone can be traced geologically across 1.7 kilometres of strike length of the San Felix and San Francisco concessions and onto the Cerro Prieto North concession.  It outcrops on the Cerro Prieto North property over a strike length of approximately 300 meters starting approximately 2.6 kilometres north of the property boundary.  In total, the structure has a potential strike length of 4.8 kilometers on the Cerro Prieto North property.

The geological structure in this location is relatively steeply dipping and intersects relatively flat lying sediments and volcanics.  An Oroco geologist recently began sampling and mapping the showings and general geology of the area.  Results from the sampling along the 300 meter zone are shown in Table 1, below. Highly anomalous gold and silver values are accompanied by anomalous to highly anomalous lead and zinc values in the majority of the samples and indicate mineralization similar to that seen in the historical workings at the Cerro Prieto Mine.  Samples FCO 001 and FCO 002, FCO 005 and FC 006, FC 008 and FC 009, and FC 015 and FC 016 represent contiguous samples taken across the total width of the mineralized zone.

Sample Length (m) Au (g/t) Ag (g/t) Pb (%) Zn (%)
FCO 001 1.2 0.342 93.2 0.34 0.28
FCO 002 0.6 2.110 142.0 0.90 0.24
FCO 003 0.9 0.851 31.6 0.30 0.22
FCO 004 grab 0.090 31.0 0.09 0.04
FCO 005 1.2 2.180 134.0 0.44 0.43
FCO 006 1.1 1.960 139.0 0.23 0.26
FCO 007 1.3 0.268 200.0 0.15 0.24
FCO 008 0.4 0.330 143.0 0.26 0.09
FCO 009 0.85 1.240 132.0 0.22 0.08
FCO 010 Grab 0.194 87.8 0.17 0.09
FCO 011 0.4 0.146 107.0 0.24 0.20
FCO 012 0.3 0.084 33.3 0.05 0.07
FCO 013 0.3 0.162 111.0 0.07 0.10
FCO 014 0.8 0.400 47.9 0.32 0.79
FCO 015 1.0 1.700 115.0 2.26 3.17
FCO 016 0.5 0.031 1.1 0.04 0.04
FCO 017 1.0 0.616 28.9 0.71 1.40

Regarding the significance to the Cerro Prieto Project of the identification of the mineralized structure and the assay results, Oroco President and CEO Stephen Leahy stated:  “We are extremely encouraged by the strong mineralization such at these outcroppings several kilometers along strike from the Cerro Prieto Mine.”Oroco is planning an extensive trench and sampling program on the Cerro Prieto North claim to further delineate the mineralized zone and a geophysical program to the north and south of the outcrop area to trace the zone under cover.  The results from this follow-up program will assist in defining future drill programs.

Oroco is a Canadian mineral exploration company which holds a 100% interest in six mineral concessions in Mexico.  The company is initially focused on its three Sonora concessions, comprising the Cerro Prieto Mine, a historic polymetallic deposit, and the nearby 2,508 hectare Cerro Prieto North concession.  In addition, Oroco holds three mining concessions in the state of Guerrero totaling 293 hectares.Director Ken Thorsen, BSc Geological Engineering, P Eng, is the company’s Qualified Person for the Cerro Prieto Project.  Mr. Thorsen is responsible for the current exploration and development program and has reviewed the content of this release.

Stephen Leahy


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These historical resource estimate models are based upon historical resource estimates prepared by John Thornton in 2011. While, in the opinion of Dane A. Bridge, author of the revised NI 43-101 standard technical report, Geology, Mineralization and Exploration of the Santo Tomas Cu-(Mo-Au-Ag) Porphyry Deposit, Sinaloa, Mexico dated April 21, 2020 (the “Report”), reliable estimation practices were used, in order to upgrade or verify the historical estimations, resampling and assay of historical drill samples, twinning of historical drill holes, and a new program of regularly spaced drilling is required. No qualified person has undertaken sufficient work to classify the current mineral resources or mineral reserves upon which these models are based and the Company is not treating the estimates as current estimates of the mineral resources. The Company gives no assurance that either these models or the historical resource estimates upon which they are based are accurate, and does not undertake any obligation to update the models or to release publicly any update or revisions of the resource estimates except as required by applicable securities law. The reader is cautioned not to rely upon these models or the historical resource estimates upon which they are based.

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