International Tower Hill Announces Positive Metallurgical Test Work Results on its Livengood Gold Project, Alaska <ITH.TO>


International Tower Hill Mines Ltd.

December 11, 2012 - 08:00:00 AM

International Tower Hill Announces Positive Metallurgical Test Work Results on
its Livengood Gold Project, Alaska

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Dec. 11, 2012) - International
Tower Hill Mines Ltd. ("ITH" or the "Company") (TSX:ITH)(NYSE
MKT:THM)(FRANKFURT:IW9) is pleased to provide positive results from the
metallurgical test work on its 100% owned Livengood Project located in Alaska.

Metallurgical studies have determined that the gold recovery for the four key
rock types that comprise the majority of the Livengood Gold resource will
range between 77 and 88 percent. A substantial portion of the early production
at Livengood is expected from these rock types.

The study program included tests to first determine the gravity recoverable
gold, and then evaluated two alternative mill flow sheets for processing of
the gravity tailing. The tests showed a robust gravity recovery of between 43
and 55 percent. The gravity recovery, total gravity/flotation/concentrate
Carbon-in-Leach (CIL) recovery, and the total gravity/whole ore CIL recovery
by major rock type are outlined below:

Table 1. Gold Recovery by Rock Type as Determined by SGS Test work (%)

Gravity/flotation Gravity/whole ore
Rock Type Gravity concentrate CIL CIL
Cambrian 49.0 81 (est.) 84.2
Upper Seds, Sunshine 44.1 76.1 87.7
Upper Seds, Core Zone 43.5 67.4 76.7
Volcanics, Core Zone 55.3 74.4 84.8

Note: These four rock types comprised approximately 70% of the mineable
resource described in the August 2011 PEA. The Feasibility Study will
update and define the percentage of each rock type contained in the
mineable resource.

These results are based upon test work completed on a large number of
representative samples contained in the 10,800 kg of mineralized rock that was
delivered to SGS Canada Inc. in February, 2012. This extensive program of
optimization testing and analysis, overseen by Samuel Engineering, has defined
the recovery for these rock types that will be used in the Feasibility Study.

Based on this successful test program and related engineering tradeoff
studies, the Company has determined that a gravity circuit followed by a whole
ore CIL circuit will be the mill flow sheet developed in the Feasibility

Donald C. Ewigleben, CEO, stated: "I am very pleased with the results of these
extensive metallurgical tests completed over the last eight months which have
validated and defined the overall gold recoveries on this exceptional gold
deposit. This work has defined the milling flow sheet for the project as the
Company continues to focus on other overall project optimization aspects that
could further enhance its development."

Additional metallurgical test work continues at SGS to confirm recovery on the
Lower Seds, Core Zone rock type. This rock type will be primarily encountered
and processed later in the mine life. This additional test work will be
completed and incorporated into the Feasibility Study, which is on schedule
for release by the first half of 2013.

Qualified Person

Mr. Richard S. Kunter, FAusIMM CP, QP, Chief Process Engineer, Mining and
Metals, Samuel Engineering, Inc. a qualified person as defined by National
Instrument 43-101, has supervised the preparation of the scientific and
technical information that forms the basis of this news release and has
approved the disclosure herein. Mr. Kunter and Samuels Engineering, Inc. are
both independent of ITH.

About International Tower Hill Mines Ltd.

International Tower Hill Mines Ltd. controls a 100% interest in the
world-class Livengood Gold Project accessible by paved highway 70 miles north
of Fairbanks, Alaska.

On behalf of International Tower Hill Mines Ltd.

Donald C. Ewigleben, President & Chief Executive Officer