Rathdowney Drilling Highlights Excellent Resource Potential, Builds on Positive Results from Project Olza Preliminary Economic Assessment

VANCOUVER, Dec. 3, 2015 /CNW/ - Rathdowney Resources Ltd. ("Rathdowney" or the "Company") (TSXV: RTH) announces additional positive results from drilling, supporting mine planning programs at its flagship Olza Zinc-Lead-Silver Project in southwest Poland. 

Proven zinc-lead district with excellent resource potential 

Project Olza is located in the Upper Silesian mining district, a region of world-class Mississippi Valley type ("MVT") deposits as recognized by the USGS¹, and which includes long-life mines such as Pomorzany and Olkusz.  Significant zinc-lead deposits in the area of Project Olza were identified, historically, through 180,000 m of drilling conducted in the 1950s to 1980s by the Polish State Survey.  Rathdowney's drilling program in 2011-2013 began to test these extensive deposits, and to December 2014 had outlined 24.4 million tonnes of inferred mineral resources grading 7.02% Zn+Pb (at a 2% Zn cut-off)² with excellent additional resource potential.  Information in the table below provides a comparison with other Upper Silesian deposits and well-known MVT districts.

District	Mine	Status	Production +R/R	Grade
Upper Silesian, Poland	Pomorzany	Producing	93.8 Mt^3	4.08% Zn, 1.26% Pb
Upper Silesian, Poland	Olkusz	Past Producer	19.5 Mt^3	3.83% Zn, 2.08% Pb
Pine Point, Canada		Past producer	76.11 Mt^4	6.51% Zn, 2.91% Pb
Viburnum Trend, USA		Producing	215.91 Mt^4	0.93% Zn, 6.47% Pb

Rathdowney's drilling in 2014-2015 has been focused in the vicinity of Zone 5, one of several zones that comprise the current mineral resource.  Todays' results are from 15 new holes (OLZ-256 to OLZ-270), each of which was drilled outside of the resource-area at Zone 5 as shown on the map at http://www.rathdowneyresources.com/i/pdf/rdr/OLZA_MAP__NR_Dec_15.pdf .  Eleven of the 15 new holes include significant mineralization, detailed in the Table of Assay Results attached to this release.  Highlights include:

• 7.0 m of 6.5% Zn+Pb and 30.6 g/t Ag, including 2.2 m of 17.4% Zn+Pb and 54.2 g/t Ag in hole OLZ-256
• 7.3 m of 6.4% Zn+Pb and 10.7 g/t Ag, including 4.9 m of 8.5% Zn+Pb and 14.7 g/t Ag and 2.7 m of 13.1% Zn+Pb and 25.2 g/t Ag in hole OLZ-261

This is the third tranche of holes from the 2014-2015 program (also see Rathdowney News Releases dated September 22, 2015 and June 23, 2015) which, collectively, are demonstrating good continuity in the mineralization to the northwest and northeast of Zone 5.  The results clearly underline the potential for expansion of Zone 5 and highlight the excellent prospects for further resource increases across the Project Olza concessions with additional drilling.

Key geotechnical data was also collected from each drill hole for engineering studies to assess the suitability of the Zone 5 area for development of site facilities.  Concurrently, hydrogeological studies and environmental data collection programs are being conducted over an extensive area to fully assess and consider the existing conditions in the broader region.  In combination with the geotechnical data from drilling, these studies will provide the details to support site specifications for mine development, water management and other important planning activities to be used in project permitting for a modern, long-life mine. 

Prime location with existing low-cost infrastructure

In addition to its geological potential, Project Olza has a number of advantages when compared to many other emerging Zn-Pb mine development projects.  Mining has taken place in the Upper Silesian district since the 12^th century, and as a result, there is extensive infrastructure, including power and rail already in place as well as a skilled local workforce.  Situated in the heart of Europe, the existing rail infrastructure provides Project Olza with direct, low-cost access to ports and smelters.

These advantages are reflected in the results from the Preliminary Economic Assessment ("PEA") announced earlier this year.  The Project Olza PEA shows strong potential financial returns for a conventional 6,000 tonnes per day bulk room and pillar mine with standard on-site processing yielding two marketable low iron zinc and lead concentrates⁵.  Project Olza would be a low-cost producer of an average of 197 million pounds of zinc and 59 million pounds of lead, annually, readily available to markets in Europe and throughout the world.

President and CEO Robert Konski said:

"Our drilling continues to demonstrate the excellent resource potential at Project Olza, building on the PEA and providing a strong foundation for comprehensive mine planning studies. Project Olza's central location in a stable region with a long mining history is a key advantage to our project, further enhancing its technical merits.  We look forward to continuing our work with the communities and the government, and advancing toward a modern long-life mining operation in Poland."

About Rathdowney and Project Olza

Rathdowney Resources Ltd. is focused on advancing Project Olza through permitting and into production. Project Olza is located in the Upper Silesian Mining District of southwestern Poland, a world-class region of Mississippi Valley-type deposits with well-developed mining infrastructure.  Easily accessible by road, the Olza project site is a one-hour drive from Krakow, a major city with full services, including an international airport.  The deposits at Olza are 25 km from the ZGH zinc smelter at Boleslaw. A railway line runs through the Olza project-area, linking it to smelters throughout Europe and to ports on the Baltic Sea.  

Rathdowney is committed to responsible mineral exploration and development with respectful, mutually beneficial discussions and opportunities for local communities.  Our Project Olza community specialists discuss our programs with representatives of local communities and government during all phases of work, and are currently in discussions with community members and others regarding the results of the PEA and other programs.

Dr. Keith Roberts, PGeo, is the qualified person for the drilling program at Project Olza and has reviewed the drilling information in this release.  Other technical information has been reviewed by David Copeland, PEng, a qualified person who is also Chairman and a Director of Rathdowney.

On behalf of the Board of Directors
Robert Konski
President & CEO

Notes:
¹ Sangster, D.F., USGS, 1990, Mississippi Valley-Type and Sedex lead-zinc deposits: A comparative examination: Transactions of the Institution of Mining and Metallurgy, sec. B, v. 99, p. B21–B42.
² Individual grades are 5.53% Zn and 1.49% Pb.  For further information see Rathdowney's new release dated February 2, 2015. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
³ Production + remaining reserves at 2010; www.geoportal.pl
⁴ Leach, David L. et al, USGS, 2010, A Deposit Model for Mississippi Valley Type Lead-Zinc Ores, Chapter A, Mineral Resource Deposit Models; Production + remaining resources at 2005.
⁵ For additional details on the PEA, see Rathdowney's news releases dated April 20, 2015 and May 14, 2015.

Notes 1, 3, and 4 are associated with deposits that are not on the Olza property. They are mainly reported production and derived from government sources.  They are historical in nature (see dates stated) and the work necessary to verify them has not been undertaken by a qualified person. 

Table of Assay Results

Drill Hole Number		From (m)	To  (m)	Length  (m)	Pb+Zn (%)	Zn  (%)	Pb  (%)	Ag  (g/t)
OLZ-256		104.20	111.15	6.95	6.54	6.33	0.21	30.6
	Incl	107.05	109.28	2.23	17.39	17.02	0.37	54.2
OLZ-258		102.80	105.80	3.00	3.77	1.33	2.44	11.0
	Incl	103.40	105.50	2.10	4.80	1.47	3.33	13.3
OLZ-259		99.50	100.50	1.00	3.34	3.29	0.05	6.8
OLZ-260		126.85	136.40	9.55	0.86	0.45	0.41	3.1
	Incl	132.85	134.40	1.55	1.67	1.06	0.61	10.2
OLZ-261		147.00	154.26	7.26	6.41	6.01	0.40	10.7
	Incl	149.35	154.26	4.91	8.52	8.00	0.52	14.7
	And	151.61	154.26	2.65	13.05	13.04	0.01	25.2
OLZ-262		154.00	160.00	6.00	1.64	1.42	0.22	2.0
	Incl	155.60	157.40	1.80	2.90	2.78	0.12	3.3
OLZ-265		119.90	120.70	0.80	6.51	6.50	0.01	60.1
OLZ-266		158.00	159.95	1.95	5.79	5.16	0.63	18.1
OLZ-267		147.00	152.60	5.60	1.57	1.24	0.33	0.9
		158.40	162.20	3.80	1.80	1.78	0.02	2.4
	Incl	161.00	162.20	1.20	3.23	3.23	0.003	4.9
OLZ-268		158.60	160.10	1.50	2.20	2.08	0.12	4.3
OLZ-270		157.00	160.20	3.20	1.90	1.27	0.63	2.3
	Incl	158.80	159.25	0.45	8.32	4.08	4.24	13.9
All diamond core holes were drilled vertically through the sub-horizontal mineralized horizons so intersections represent approximate true widths. No significant results in holes 257, 263, 264 and 269. *Figures may not add due to rounding.

Sample preparation for the current drilling program is performed at the Bureau Veritas (BV) laboratory in Krakow, Poland. Core samples are weighed, dried and crushed to >70% passing 10 mesh (2 mm), then 500 g sub-samples are riffle split and pulverized to >85% passing 200 mesh (75 µm).  Samples are shipped by air freight to the Vancouver laboratory of Bureau Veritas Commodities Canada Ltd., an ISO 9001 accredited laboratory, for analysis. All samples are assayed for Pb, Zn, Ag and 38 additional elements by 4 acid (HF-HNO₃-HClO₄, HCl) digestion of an 0.5 g sample with an ICP-AES/ICP-MS (inductively coupled atomic emission spectrometry/mass spectrometry) finish (BV Code: MA270). Samples with Zn values >40% or Pb values >10%, the upper limits for the MA270 method, are re-analyzed by BV method MA371; 4 acid digestion of 0.1 g sample with ICP-AES finish. As part of a comprehensive QAQC program, one standard and one replicate are inserted into the sample stream in each group of 20 samples, as well as one or more blanks in each analytical batch.

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.

This release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, that address exploration drilling, exploitation activities and events or developments that the Company expects, are forward looking statements. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Assumptions used by the Company to develop forward-looking statements include the following: the Olza project will obtain all required environmental and other permits and all land use and other licenses, studies and development of the Olza project will continue to be positive, and no geological or technical problems will occur. Factors that could cause actual results to differ materially from those in forward-looking statements include market prices, exploitation and exploration successes, continuity of mineralization, potential environmental issues and liabilities associated with exploration, development and mining activities, uncertainties related to the ability to obtain necessary permits, licenses and title and delays due to third party opposition, changes in government policies regarding mining and natural resource exploration and exploitation, continued availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and actual results or developments may differ materially from those projected in the forward-looking statements. For more information on the Company, investors should review the Company's continuous disclosure filings that are available at www.sedar.com.

Information Concerning Estimates of Inferred Resources

This news release uses the term "inferred mineral resources". Rathdowney Resources Ltd. advises investors that although these terms are recognized and required by Canadian regulations (under National Instrument 43-101 Standards of Disclosure for Mineral Projects), the U.S. Securities and Exchange Commission does not recognize them. Investors are cautioned not to assume that any part or all of the mineral deposits in these categories will ever be converted into reserves.  In addition, "inferred resources" have a great amount of uncertainty as to their existence, and economic and legal feasibility. It cannot be assumed that all or any part of an Inferred Mineral Resource will ever be upgraded to a higher category. Under Canadian rules, estimates of Inferred Mineral Resources may not form the basis of feasibility or pre-feasibility studies, or economic studies except for Preliminary Economic Assessment as defined under 43-101. Investors are cautioned not to assume that part or all of an inferred resource exists, or is economically or legally mineable.

SOURCE Rathdowney Resources Ltd.

For further details, visit the Company website www.rathdowneyresources.com or contact Susie Bell, Investor Relations Tel [phone] or Toll free (NA): 1-800-667-2114