Aurelio Resource Corp (fka AULO)

[MUSHROOMKING]

AURELIO ANNOUNCES HIGHLY ENCOURAGING METALLURGICAL TEST RESULTS FOR HILL COPPER LEACH PROJECT





LITTLETON, COLORADO, April 28, 2008 News Release #08-11



Aurelio Resource Corporation (OTCBB : AULO, Frankfurt : F3RA) is pleased to announce highly encouraging results from sequential leach test programs completed by two independent labs on mineralized material from the Company's wholly-owned Hill Copper Leach Project, located in Cochise County, Arizona.



The results confirm that secondary (chalcocite) copper mineralization at Hill is amenable to extraction of copper using industry-standard acid leach solution methods.



Initial sequential leach analyses of individual five-foot drilling samples from the 2007 drilling campaign were completed by Skyline Assayers & Laboratories ("Skyline") in Tucson, Arizona. Similar analyses were completed on a larger composite sample by Mountain States Research & Development International ("MSRDI") in Vail, Arizona. These tests were conducted to determine if the chalcocite blanket is metallurgically-amenable to the conventional heap leach process.



For each test program, drill holes and sample intervals of secondary (chalcocite) copper mineralization were selected to represent variable combinations of grade, lithology and mineralogy in the Hill Copper Leach Project. The typical profile of mineralization at the Hill Project consists of a barren leached cap which overlies a blanket-like secondary copper zone (referred to as the Hill Copper Leach Project); the secondary copper blanket, in turn, is underlain by primary (sulfide) copper-zinc mineralization with significant silver and gold credits.



The Skyline test work (detailed in Table 1) indicated that the weighted-average soluble copper as determined by sequential leach analysis is 85%:



Table 1: Sequential Leach Results (Skyline Labs) For Hill Copper Leach Project




Drill Hole


From


To


Interval
Copper Grade

(total copper)


Soluble Copper

BR07-24
170 ft
265 ft
95 ft
0.32 %
88 %

BR07-25
200 ft
405 ft
205 ft
1.25 %
79 %

BR07-26
120 ft
170 ft
50 ft
0.19 %
89 %

BR07-27
130 ft
295 ft
165 ft
0.47 %
89 %

BR07-28
100 ft
145 ft
45ft
0.13 %
90 %











Weighted Average:


0.68 %


85%




Note: Results for BR07-25 are lower than the other four drill holes because of a single, five-foot interval which had an extremely high copper content, but a lower solubility for that corresponding test interval.



In order to confirm these results, Aurelio requested a composite sample from the drilling rejects to be similarly tested by MSRDI.



MSRDI's analysis was carried out on a larger composite sample from the 200 to 405 feet interval in drill hole BR07-25, and indicates that 88% of the copper is soluble (compared to 79% soluble copper in the Skyline tests).



The results from MSRDI and Skyline confirm that the secondary (chalcocite) copper mineralization in the Hill Copper Leach Project is soluble, and potentially treatable by standard heap-leach technology. Based on these encouraging results, MSRDI has been contracted to continue metallurgical testwork (bottle roll tests followed by column tests) to determine additional parameters for a heap-leach operation at the Hill Copper Leach Project.



"We are very encouraged by these preliminary metallurgical results" said Steve Doppler, President & CEO. "These relatively high soluble copper values indicate the large chalcocite copper blanket mineralization in the Hill Copper Leach Project appears amenable to conventional, low-cost acid heap leaching technology and processing methods. This may allow us to design a starter open pit mine and SX/EW heap leach operation as an initial phase of the overall development of our 100% owned Hill Copper-Zinc Project, and provide access to the deep, high-grade sulfide deposit beneath. We plan to move ahead with further metallurgical testing, and will release results when available."