International Tower Hill Mines Reports Historical Resource on Recently Acquired Placer Claims Near Livengood Project, Alaska
Published : February 27, 2012
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VANCOUVER, BRITISH COLUMBIA--(Marketwire - Feb. 27, 2012) - International Tower Hill Mines Ltd. ("ITH" or the "Company") (News - Market indicators)(NYSE Amex:THM) FRANKFURT:IW9) is providing information with respect to a historical resource estimate for the Company's 100% owned Placer claims near the Livengood Gold Project located approximately 70 miles north of Fairbanks, Alaska.

Historical Resource Estimate

A historical resource estimate for the Company's Livengood Placer claims (which were acquired by the Company in December 2011) was completed by Alaska/Nevada Gold Mines Ltd. (ANGM), and a report entitled "Livengood Bench Gold Mine, Placer Gold Property, Livengood, Alaska, Summary Report - May 20, 2006" was prepared. The report estimated a resource of approximately 5.2 million cubic yards of gold-bearing gravel at an average grade of 1.0 g/t gold in several defined areas within the Livengood Placer claims for a total gold resource of approximately 230,000 ounces in the Measured and Indicated resource categories. (Table 1).

Table 1. Placer Gold Resource - Livengood Valley 2006
  In-Situ Gravel Volume
(Bank Cubic Yards)
Ounces (Gold) Grade
(Oz (Gold)/Bank Cubic Yard)
Gold Grade
(g/t)
Measured Resources 1,391,400 77,000 0.055 1.25
Indicated Resources 3,839,400 153,000 0.040 0.91
Total Resources 5,230,800 230,000 0.044 1.00
Note: Ounces per bank cubic yard (BCY) converted to g/tonne based on an assumed 3,000 lbs/BCY. The above resource is effective as of the date of calculation in 2006. After calculation of this resource and prior to purchase of the placer property by the Company in 2011, mining operations completed in 2010 result in reduction to Measured Resources of 7,100 ounces.

Placer gold was first discovered in the Livengood area in 1914 and led to a gold rush that recovered approximately 530,000 ounces of placer gold from the district since that time. The historical resource estimate in Table 1 is considered relevant to the Company both to indicate that sufficient potential exists in the Livengood Placer claims to justify incurring the expense to explore the ground and also as a guide to the prioritization of potential development efforts.

"The potential for significant alluvial gold to be found in the Livengood Placer claims, as illustrated by the existence of the historical resource estimate, represents a truly exciting opportunity for International Tower Hill Mines to create significant value for our shareholders in the near term," states Jim Komadina, president and chief executive officer of ITH. "While our main Livengood development team continues to focus solely on advancing the large Livengood Gold Project towards permitting and development into a large-scale gold mine in North America, we have a highly experienced placer mining team assessing the potential of the Livengood Placer property with a view to determining as soon as possible if a resource sufficient to warrant future production may be identified."

Records exist for 2,370 placer drill holes that have been completed on the Livengood Placer claims since 1933. Of these, the 945 holes completed between 1933 and 1984 were primarily 6" churn drill holes. The 1,425 drill holes completed between 1984 and 2000 were 8" reverse circulation rotary drill holes utilizing a center return tri-cone bit.

The historical resource was calculated by the polygonal method whereby the thickness and grade of the gravel at each drill hole was determined and applied to the area of influence of that hole. The thickness of the auriferous gravel at each hole was determined from the drill and sample data, with an allowance of 2 feet of bedrock immediately underlying the auriferous gravel included in the applicable thickness. The grade of the auriferous section at each hole was determined by obtaining the measured weight of free gold recovered, adjusted to fine ounces based on a 910 fineness, and dividing by the actual in-situ volume of the sample recovered, or the theoretical volume of the drill bit diameter penetrating through the thickness of the mining section, whichever was larger. All values greater than 0.139 oz/BCY, based on a property wide histogram at the 95th percentile, were cut to limit the influence of high grade drill holes. With the thickness and grade of each hole determined, the area of influence of the drill hole was determined based on polygons drawn between the midpoints of line segments to adjacent drill holes. The area of the resulting polygon was multiplied by the mining section thickness and grade to assign an overburden volume, mining section volume, and ounces to each drill hole. An iterative process of applying geologic interpretation, drill density, gravel thickness and continuity, grade continuity, possible mining scenarios and marginal economics resulted in grouping estimated ounces into measured and indicated categories. An updated resource calculation based on the same data would not change the total ounces, but might result in assignment to different resource categories. 

The Company cautions that both the 2006 report and the included resource estimate were not prepared in compliance with NI 43-101, and are therefore historical in nature and the Company is not treating such resources as a current resource under NI 43-101. Investors are further cautioned that a qualified person has not yet completed sufficient work to be able to verify the historical resources, and therefore they should not be relied upon.

Mr. Richard Hughes, P.E., H2T Mine Engineering Services, LLP, a qualified person as defined under NI 43-101, has reviewed the historical resource estimate on behalf of the Company. After his review, Mr. Hughes concluded, "We concur with the methodology used by ANGM and believe that its resource analysis is reasonable as presented by category, subject to an uncertainty presented by a 2010 production shortfall. To develop a NI 43-101 compliant placer resource," Mr. Hughes stated, "A more detailed analysis of the resource category assignment should be conducted to include complete detailed drill log take-off and spatial consideration for category allocation. The effect of underground drift mining on the resource calculations needs to be clearly understood. I strongly recommend resource definition be improved by utilizing new drilling methods in the measured and indicated areas."

The Company plans to conduct a confirmation drill program of 2,275 meters on the Livengood Placer claims beginning April 2012 to assess whether the historical drilling data can be used in the calculation of a current NI 43-101 resource for the placer property.

Qualified Person

Mr. Richard Hughes, P.E., principal of H2T Mine Engineering Services, LLP, has acted as the qualified person, as defined in NI 43-101, on behalf of the Company for the review of the 2006 historical resource estimate. He has over 50 years of experience in mining engineering, including all stages of placer mineral exploration, development, and production, including management positions in both surface and underground placer operations in Alaska. He has been a registered professional engineer in Alaska since 1982. Both Mr. Hughes and H2T Mine Engineering Services, LLP are independent of the Company under NI 43-101.

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. In 2012, ITH is focused on the rapid advancement of the Livengood project into a compelling potential development scenario while it continues to expand its current resource and explore its 145 km2 district for new deposits.

On behalf of International Tower Hill Mines Ltd.

James J. Komadina, Chief Executive Officer

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements and forward-looking information (collectively, "forward-looking statements") within the meaning of applicable Canadian and US securities legislation. All statements, other than statements of historical fact, included herein including, without limitation, statements regarding the anticipated content, commencement and cost of exploration programs, anticipated exploration program results, the discovery and delineation of mineral deposits/resources/reserves, the potential for any development of, or production from, the Livengood Placer claims, the projected dates for the commencement of feasibility study work and for the completion of a pre-feasibility and feasibility study for the Livengood Project, the potential for a production decision to be made in respect of the Livengood Project, the potential for the development and construction of a mine and any production at the Livengood project, business and financing plans and business trends, are forward-looking statements. Although the Company believes that such statements are reasonable, it can give no assurance that such expectations will prove to be correct. Forward-looking statements are typically identified by words such as: believe, expect, anticipate, intend, estimate, postulate and similar expressions, or are those, which, by their nature, refer to future events. The Company cautions investors that any forward-looking statements by the Company are not guarantees of future results or performance, and that actual results may differ materially from those in forward looking statements as a result of various factors, including, but not limited to, variations in the nature, quality and quantity of any mineral deposits that may be located, variations in the market price of any mineral products the Company may produce or plan to produce, the Company's inability to obtain any necessary permits, consents or authorizations required for its activities, the Company's inability to produce minerals from its properties successfully or profitably, to continue its projected growth, to raise the necessary capital or to be fully able to implement its business strategies, and other risks and uncertainties disclosed in the Company's Annual Information Form filed with certain securities commissions in Canada and the Company's annual report on Form 40F filed with the United States Securities and Exchange Commission (the "SEC"), and other information released by the Company and filed with the appropriate regulatory agencies. All of the Company's Canadian public disclosure filings may be accessed via www.sedar.com and its United States public disclosure filings may be accessed via www.sec.gov, and readers are urged to review these materials, including the current technical report filed with respect to the Company's Livengood Project.

Caution Regarding Adjacent or Similar Mineral Properties

This news release contains information with respect to adjacent or similar mineral properties (including references to placer gold recovery in the district in which the Livengood Placer claims are located) in respect of which the Company has no interest or rights to explore or mine. The Company advises US investors that the mining guidelines of the US Securities and Exchange Commission (the "SEC") set forth in the SEC's Industry Guide 7 ("SEC Industry Guide 7") strictly prohibit information of this type in documents filed with the SEC. Readers are cautioned that the Company has no interest in or right to acquire any interest in any such properties, and that mineral deposits on adjacent or similar properties, or the fact that placer gold was recovered from other properties in the Livengood district, are not indicative of mineral deposits on the Company's properties or any possibility for the recovery of placer gold from the Company's Livengood Placer claims.

This press release is not, and is not to be construed in any way as, an offer to buy or sell securities in the United States.

NR12-06



International Tower Hill Mines Ltd.
Shirley Zhou
Vice-President - Corporate Communications
Direct: 604-343-4799 or Toll-Free: 1-855-208-4642 Ext. 13
szhou@ithmines.com
Data and Statistics for these countries : Canada | All
Gold and Silver Prices for these countries : Canada | All

Intl. Tower Hill Mines

DEVELOPMENT STAGE
CODE : ITH.TO
ISIN : CA46051L1040
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Intl. Tower Hill is a gold development stage company based in Canada.

Intl. Tower Hill develops gold and silver in USA, and holds various exploration projects in USA.

Its main asset in development is LIVENGOOD in USA and its main exploration properties are BMP, PAINTED HILLS and COFFE DOME in USA.

Intl. Tower Hill is listed in Canada, in Germany and in United States of America. Its market capitalisation is CA$ 111.9 millions as of today (US$ 89.5 millions, € 78.4 millions).

Its stock quote reached its lowest recent point on April 29, 2005 at CA$ 0.25, and its highest recent level on February 25, 2011 at CA$ 9.99.

Intl. Tower Hill has 162 190 000 shares outstanding.

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6/16/2010(Livengood)Announces Resource Update, Livengood Gold Project, Alaska
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4/26/2010(Livengood)Expands Higher Grade SW and Sunshine Zones at Livengood Proj...
3/22/2010(Livengood)Expands Livengood Deposit with First Results of Winter Drill...
3/10/2010(Livengood)Increases Indicated Resources at Livengood Gold Project
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11/30/2009(Livengood)Positive Preliminary Economic Assessment Results
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11/2/2009(Livengood)Continues to Expand the Livengood Gold Project
9/30/2009(Livengood)Expands the Sunshine Zone at Livengood
9/9/2009(Livengood)Latest Drill Results From Livengood Gold Project, Alaska
9/2/2009(Coffe Dome)Begins Drilling at Coffee Dome Project, Alaska
8/4/2009(North Bullfrog)Signs Agreement to Acquire 100% Interest in North Bullfrog
8/5/2009(Livengood)Delineates Major New Zone of Gold Mineralization at Livengoo...
6/26/2009(Livengood)Resource Update at Livengood, Alaska
6/10/2009(Livengood)Livengood Gold Project, Alaska Summer Drilling Program Comme...
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5/6/2016International Tower reports 1Q loss
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8/6/2015International Tower reports 2Q loss
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3/26/2015International Tower Hill Mines Appoints Karl Hanneman as Chi...
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3/21/2012International Tower Hill Mines Files Audited Annual Financia...
3/6/2012(Livengood)International Tower Hill Mines Validates Resource Estimate a...
2/27/2012International Tower Hill Mines Reports Historical Resource o...
1/16/2012International Tower Hill Mines Changes Fiscal Year End
1/4/2012International Tower Hill Mines Grants Options
12/20/2011International Tower Hill Mines Appoints Robert D. Comer as I...
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7/28/2011International Tower Hill Mines Grants Stock Options
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5/6/2010 Signs Key Exploration Agreement with Ahtna
2/11/2010Receives Share Ownership Top-up Notice from AngloGold Ashant...
1/12/2010Hires Chief Operating Officer
11/26/2009to Begin Trading on Toronto Stock Exchange
11/18/2009Receives Conditional Toronto Stock Exchange Listing Approval
10/13/2009Expands Livengood Gold Resource by 64%
7/10/2009Receives Share Ownership Top-up Notice from AngloGold Ashant...
7/3/2009Retains Renmark Financial Communications Inc.
5/20/2009Receives Proceeds of $23,114,288 from Warrant/Broker Option ...
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