To: Letmebe Frank who wrote (727 ) 3/11/2003 12:15:56 PM From: Rocket Red Respond to of 16207 Mountain Province Diamonds Inc (C-MPV) - News Release Mountain Province learns of Kelvin's kimberlite Mountain Province Diamonds Inc MPV Shares issued 49,116,070 Mar 10 2003 close $ 1.83 Tuesday March 11 2003 News Release Mr. Jan Vandersande reports MOUNTAIN PROVINCE DIAMONDS INC. PROVIDES AN EXPLORATION UPDATE Mountain Province Diamonds has been informed by its joint venture partner De Beers Canada Exploration Inc. (De Beers Canada), a wholly owned subsidiary of De Beers Consolidated Mines Limited (De Beers), that exploration drilling of five holes at and near the Kelvin kimberlite body has been completed. Four of the five holes intersected kimberlite with the largest intersection being 25 metres horizontally projected. This body now appears to extend not just in the north-south direction but also in the east-west direction. Kimberlite intersections as far as 370 metres south of Kelvin are encouragingly thick. The Kelvin kimberlite body is located in the joint venture's AK leased claims situated in the Northwest Territories of Canada. It is approximately nine kilometres northeast of Kennady Lake, which contains the Hearne, Tuzo and 5034 diamondiferous kimberlite pipes. Separately, the revenue per tonne modelling for the 5034 and Hearne pipes by De Beers is nearly finished, and results are expected before the end of the month. The Kelvin kimberlite body was discovered in the spring of 2000. It is located approximately nine kilometres northeast of the Kennady Lake and three kilometres south-southwest of the Faraday kimberlite body, which was discovered in 1999. One drill hole in the north-south direction in the Kelvin pipe intersected 40 metres of kimberlite horizontally projected, while another hole in approximately the east-west direction intersected 23 metres of kimberlite horizontally projected. A 2.3-metre-thick kimberlite dike (called Hobbes) was intersected previously at a depth of 31 metres approximately 300 metres south-southwest of the Kelvin pipe under the same narrow lake. It is suspected that this Hobbes intersection and the Kelvin body could be connected with a kimberlite bearing structure that pinches and swells. Microdiamond results from the drill holes drilled into Kelvin in 2000 were reported in news in Stockwatch dated Dec. 18, 2002, and indicate that the microdiamond counts for the Kelvin body are very similar to those for the 5034 and Hearne pipes. Those latter pipes have average grades of 1.64 and 1.71 carats per tonne. A ground gravity survey conducted in the current winter program covered the Kelvin body and as far as a few hundred metres south of Hobbes, and identified several drill targets. A hole drilled 50 metres to the west of the original 2000 drill hole into Kelvin intersected a total of 25 metres of kimberlite horizontally projected in two closely spaced intervals, while a hole drilled 60 metres to the east intersected 2.01 metres of kimberlite horizontally projected. The Kelvin body now appears to extend not just in the north-south direction, but also in the east-west direction. A hole drilled 120 metres south of Kelvin along the suspected structure between Kelvin and Hobbes intersected 7.4 metres of kimberlite horizontally projected, while a hole drilled 70 metres south of Hobbes intersected two kimberlite intersections of 2.4 metres and 3.0 metres horizontally projected. The recovered kimberlite will be sent for petrographic analysis and microdiamond recovery. Once those results are available, additional work, as appropriate, will be planned. The company is very pleased with the results and encouraged by the thicknesses of the kimberlite intersections considering the system is likely a dike structure. A similar ground gravity survey over and south of the Faraday kimberlite body is nearly complete and it is anticipated that a few holes will be drilled there. Separately, the revenue per tonne modelling for the 5034 and Hearne pipes by De Beers is progressing and is nearly finished. The additional data obtained from the 2001 and 2002 bulk samples have added some complexity to the geological model of the 5034 pipe. There appears to have been several different kimberlite intrusions during the emplacement of the pipe and different size frequency distributions for the diamonds might be needed to properly model the different lobes and possibly different zones in one of the lobes of the pipe. The results are expected before the end of March and the updated desk top study is still expected to be presented to the company by De Beers in early April. WARNING: The company relies upon litigation protection for "forward-looking" statements. (c) Copyright 2003 Canjex Publishing Ltd. stockwatch.com old url (better for printing)