Dundee Sustainable Technologies Inc. Samples 3.06% Nickel in Guatemala

MONTREAL, QUEBEC, June 27th, 2014 – Dundee Sustainable Technologies Inc. (“DSTI” or the “Corporation”) (CSE: DST), the developer and owner of proprietary technologies to serve the natural resource sector with environmentally friendly procedures, is pleased to announce sampling results from its nickel (Ni) laterite deposit in Guatemala and the successful application of its patented proprietary extraction process.

The Corporation is pleased to announce nickel results up to 3.06 % Ni from DSTI’s 100% owned, Rio Negro property located in Guatemala. In May of 2014, DSTI conducted a sampling campaign on the Rio Negro property; the purpose of the field work was to confirm known mineralisation and the application of its patented proprietary nickel extraction process.

A total of four (4) samples were taken from four (4) pits, averaging 10 metres in depth, located 250 metres apart along a 1,000 metres North-South strike length. The area consists of nickel bearing laterite mineralisation developed in zones of shearing and faulting within large ultramafic units. Composite samples of mineralised material were prepared and sent to DSTI’s Thetford Mines facility for analysis and returned the following values:

	RN-119	RN-126	RN-144	RN-257
Ni	1,55 %	1,81 %	3,06 %	0,68 %
Mg	2,35 %	5,21 %	2,71 %	1,08 %
Fe	26,67 %	18,43 %	21,20 %	39,76 %

The Corporation’s patented proprietary process for nickel extraction from laterites for the production of nickel sulfate was applied on the Rio Negro samples and achieved a nickel extraction of 90%, at ambient pressure and moderate temperature, over a short period of time. As opposed to conventional pressure leaching, DSTI’s proprietary process operates at atmospheric pressure and ambient temperature with no limitation on magnesia (MgO) and silica (SiO2) content, using diluted sulfuric acid and low energy consumption. DSTI’s has registered patents for its technology in Guatemala (patent No 5032) and in other countries.

The 100% owned Rio Negro nickel project consists of one 44 km2 exploration license where nickel mineralization is within a weathered profile averaging 20 to 30 metres in thickness with nickel values around 1.5% Ni. Comprehensive exploration work was carried out in the 1970’s and yielded 2,320 samples from 226 exploration pits. From this work, a series of historic resource estimates were generated; by Cominco, in 1980 (25.9 million tonnes grading 1.5% Ni) & Tombstone Exploration in 1997 (40.2 million tonnes grading 1.24% Ni). All historical resources are categorized as Inferred resources using the meaning ascribed to that term by the Canadian Institute of Mining (CIM), due to the uncertainty which may attach to Inferred Mineral Resources, it cannot be assumed that all or any part of an Inferred Mineral Resources will be upgraded to an Indicated or Measured Mineral Resource as a result of continued exploration. A qualified person has not done sufficient work to classify the historical estimate as current mineral resources and DSTI is not treating the historical resources as current mineral resources. Confidence in the historical estimates is insufficient to allow the meaningful application of technical and economic parameters or to enable an evaluation of economic viability.

DSTI Quality Assurance/Quality Control procedures follow standard industry practices. Sealed bags are transported from the sample site by qualified geological technicians. Sample intervals are selected according to geologic contacts, visible mineralization and alteration. Samples are stored in a secure building. Samples are placed into sample bags, sealed and shipped to an assay lab that follows ISO 9000 series of Quality Management standards or in this case, to DSTI Thetford Mines facility for analysis by ICP plasma.

The technical information in this press release was prepared and approved by Jean-Philippe Mai, P.Geo, a “qualified person” as defined in National Instrument 43-101.

Cautionary Notes

This press release refers to historical exploration results. These are derived from historical company reports. The Corporation has not independently verified and make no representations as to the accuracy of historical exploration results. Selected results and resources may not be indicative of average grades and tonnage.

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