Atico Commences Second Phase Drilling at El Roble Mine, Colombia

VANCOUVER, BRITISH COLUMBIA -- (Marketwire - Sept. 24, 2012) - Atico Mining Corporation (TSX VENTURE:ATY) is pleased to provide an update on its exploration program at El Roble property located near Carmen de Atrato, Colombia. The initial underground drill program has been completed and a second round of underground drilling has commenced following completion of a down-hole EM survey. In parallel, a second rig is drilling from the surface the first prospective area in the 10 kilometer favorable trend. Initial targets to be tested are Otos, Archi and Santa Anita areas.


Underground Exploration Program

Drilling to date (see news release dated July 19, 2012) has successfully confirmed continuity of high grade massive sulfide mineralization below level 2000, the lowest production level at the El Roble mine. The initial program consisted of 1,600 meters in 11 holes along the 300 meter strike of known mineralization exposed in underground workings on the 2000 Level (see figure 1, http://www.aticomining.com/i/Maps/NR-Sept24-12-Fig1.pdf).

A down-hole EM survey completed on eight of the 11 underground drill holes gave positive preliminary results indicating potential for additional massive sulphide bodies. A second underground drill program with one drill rig is currently underway which will test the off-hole conductive targets identified by the EM survey. This program includes drilling deeper holes, 100 - 200 meters below Level 2000 as mineralization remains open at depth and along strike to the north and south below the 2000 Level.


First Phase Underground Drilling Results:

                                        Intercept 
                              Total		
          Azimuth     Dip     Depth   From    To    Interval    Cu    Au    Ag
Hole ID  (Degrees) (Degrees)   (m)     (m)    (m)      (m)      %    (g/t) (g/t)
ATDHR-01*   45        -60    197.80  109.2 	151.0 	41.7 	6.54 	1.82 	7.43
ATDHR-02*   45        -70    207.55  165.5 	170.8 	5.3 	1.71 	1.76 	2.10
ATDHR-03*   45        -62    123.20                     No significant values
ATDHR-04*   45        -75    150.75   61.0 	102.0 	41.0 	6.49 	17.57 	13.26
ATDHR-05    45        -80    148      70.0 	79.0 	9.0 	2.50 	2.31 	16.17
Including                             75.5 	77.0 	1.5 	3.81 	9.41 	145.5
                                      77.0 	78.0 	1.0 	10.82 	1.60 	0.00
                                      78.0 	79.0 	1.0 	6.93 	0.45 	0.00
ATDHR-06    45        -40     74                                      No significant values
ATDHR-07   225        -75    134                                      No significant values
ATDHR-08   225        -55    112      No massive sulphide intercepted   Assays pending
ATDHR-09   225        -60    107      No massive sulphide intercepted   Assays pending
ATDHR-10    45        -50    105      No massive sulphide intercepted   Assays pending
ATDHR-11   100        -60    205      No massive sulphide intercepted   Assays pending

* Drill Holes reported on July 19, 2012 Press Release.

To view Figure 1, please visit the following link:
http://media3.marketwire.com/docs/aty0924fig1.pdf.


Surface Diamond Drill Program

The surface drill program, planned for 9,000 meters, is intended to test new targets in the vicinity of the mine and along the 10 kilometer favorable VMS controlling units on the El Roble property. Initial targets to be tested with 3000 meters in11 diamond drill holes include; Otos area SE of El Roble mine, Archie, and Santa Anita (see figure 2, http://www.aticomining.com/i/Maps/NR-Sept24-12-Fig2.pdf).

Target selection is based on detailed geological mapping, geochemical rock and soil anomalies, geophysics on the prospective areas (IP/Resistivity data, ground magnetics, airborne VTEM and ground gravity) and in the case of Archie and Santa Anita, historic drill holes by Minera El Roble (see El Roble Technical Report).


Otos Area

Surface drilling is currently testing the Otos area, immediately SE of El Roble mine, given its favorable access conditions and proximity to the mine. The targets in this area are a cluster of four strong gravity anomalies three of which coincide with previously identified IP anomalies along the contact between basalts and black chert, which hosts mineralization at El Roble mine. Gravity anomalies indicate the presence of high density material such as massive sulfides and the location of such anomalies in the black chert host unit along strike from the mine is considered particularly prospective. Five drill holes are planned to intercept the gravity and IP anomalies in the Otos area at depths between 50 to 150 meters (see figure 3, http://www.aticomining.com/i/Maps/NR-Sept24-12-Fig3.pdf).


Archie Area

The Archie area is the extension to the north of the El Roble mine mineralization trend. Two gravity anomalies over the favorable host lithologies have raised the prospectivity of this area. MINER explored the area in 2006 with a total of 14 drill holes directed mainly to the Basalt which returned negative results with no massive sulphide intersections (referenced in the El Roble technical report). These drill holes did not test the gravity anomalies identified or the black chert host unit. Three drill holes will test the Archie prospect


Santa Anita Area

The Santa Anita area, 7 kilometers to the south of El Roble mine, has had historic artisanal small scale copper production. MINER drilled ten holes in this area, mainly directed to the basalt formation, with the best intercept being 37.5 meters of 0.54 % Cu (see drill hole MERSA-1 referenced in the El Roble technical report). Three gravity anomalies identified along the favorable contact between basalt and black chert on the projection of historical workings at Santa Anita will be tested by three drill holes (see figure 4, http://www.aticomining.com/i/Maps/NR-Sept24-12-Fig4.pdf).

Additional targets based on VTEM anomalies in favorable host lithologies, surface mapping and geochemistry are being prioritized (see figure 2, http://www.aticomining.com/i/Maps/NR-Sept24-12-Fig2.pdf).

To view Figure 2, please visit the following link:
http://media3.marketwire.com/docs/aty0924fig2.pdf.


New prospective targets

The airborne VTEM survey over the El Roble property identified 12 prospective anomalies of which six represent new areas of interest. Anomaly number 8 located 2.5 kilometers to the SE of El Roble mine (see figure 2, http://www.aticomining.com/i/Maps/NR-Sept24-12-Fig2.pdf) led Atico geologists to a new area where the black chert host unit has been identified and mapped and outcrops of pyrite stringers and gossan zones have been found. Soil and rock samples have been collected and assay results are pending. Anomaly number 8 represents a new prospective target that will be further evaluated and prioritized for drill testing.

The new areas of interest identified by VTEM anomalies are being evaluated through detailed mapping and soil and rock geochemistry.

To view Figure 3, please visit the following link:
http://media3.marketwire.com/docs/aty0924fig3.pdf.

To view Figure 4, please visit the following link:
http://media3.marketwire.com/docs/aty0924fig4.pdf.


El Roble Property

El Roble property, located 4 hours by paved highway southwest of the city of Medellin, hosts an operating underground copper-gold mine with nominal capacity of 400 tonnes per day. Over the past twenty-two years, El Roble mine has processed approximately 1.5 million tonnes of mineralized material at an average grade of 2.5% copper and estimated gold grade of 2.5 g/t. Copper-gold mineralization at the El Roble property occurs in volcanogenic massive sulfide ("VMS") lenses. Exploration over the past two years has defined a productive contact and an enclosing package of host rocks extending for a distance of 10 kilometers across the El Roble property. This entire strike length is marked by VMS mineralization occurrence indicators.


Atico Mining Corporation

Atico is a growth oriented, copper and gold exploration and development company focused on mining opportunities in Latin America. The Company's primary property is the El Roble Project. The Company is selectively pursuing additional acquisition opportunities. For more information, please visit our website at www.aticomining.com.

The technical information in this press release has been approved by Dr. Demetrius Pohl, Ph.D., AIPG Certified Geologist, a qualified person for the technical information in this press release under NI 43-101 standards, and independent of the Company.


ON BEHALF OF THE BOARD

Fernando E. Ganoza, CEO
Atico Mining Corporation



No securities regulatory authority has either approved or disapproved of the contents of this news release. The securities being offered have not been, and will not be, registered under the United States Securities Act of 1933, as amended (the "U.S. Securities Act"), or any state securities laws, and may not be offered or sold in the United States, or to, or for the account or benefit of, a "U.S. person" (as defined in Regulation S of the U.S. Securities Act) unless pursuant to an exemption therefrom. This press release is for information purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any securities of the Company in any jurisdiction.


Cautionary Note Regarding Forward Looking Statements

This announcement includes certain "forward-looking statements" within the meaning of Canadian securities legislation. All statements, other than statements of historical fact, included herein, without limitation the use of net proceeds, are forward-looking statements. Forward- looking statements involve various risks and uncertainties and are based on certain factors and assumptions. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from the Company's expectations include uncertainties relating to interpretation of drill results and the geology, continuity and grade of mineral deposits; uncertainty of estimates of capital and operating costs; the need to obtain additional financing to maintain its interest in and/or explore and develop the Company's mineral projects; uncertainty of meeting anticipated program milestones for the Company's mineral projects; and other risks and uncertainties disclosed under the heading "Risk Factors" in the prospectus of the Company dated March 2, 2012 filed with the Canadian securities regulatory authorities on the SEDAR website at www.sedar.com.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.



Contact

Atico Mining Corporation
Kim Casswell, Corporate Secretary
+1.604.633.9022
info@aticomining.com
www.aticomining.com