- Landore Resources [LON:LND] was up in late trading after announcing that it expects to start drilling on the BAM East gold zone at its Junior Lake property in Ontario on 30 June.

The company says preparations are well advanced for the extension drilling of the newly discovered gold zone. Drilling to date has delineated the near surface, +30 metres wide gold zone, for 100 metres along strike and 100 metres down dip remaining open in all directions.

Landore is currently reviewing its lithium prospects on the highly prospective Junior Lake property, including the historic Despard pegmatite, the Swole Lake pegmatite and the Tape Lake pegmatites both of which were discovered by Landore.

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Asgard Metals - Ariana Resources' [LON:AAU] 86%-owned Australian subsidiary - has completed a joint agreement to vend a package of tenements in Western Australia and the Northern Territory to Kingston Resources as part of a broader deal involving Slipstream Resources Group.

This package of tenements contains potential for lithium-tantalum bearing pegmatitic mineralisation in four areas in Western Australia and the Northern Territory.

Managing director Dr. Kerim Sener said: "This is a very pleasing result for our technology-metals subsidiary which was able to act swiftly to secure the rights to some of the tenement applications that form part of this deal with Kingston. We are again pleased to have been able to cooperate productively with Slipstream on this deal, and to have been able to apply again a successful formula to vend the complete licence package to Kingston.

"We now look forward to seeing the formal completion of this deal and towards Kingston undertaking new exploration on this licence package."

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Sirius Minerals [LON:SXX] has announced an increase in the Probable Ore Reserve at its North Yorkshire polyhalite project.

The Reserve has increased to 280 million tonnes at an average grade of 88.4% from the previous level of 250 million tonnes of polyhalite at a grade of 87.8% (as announced on 18 September 2013), Sirius said.

"The Reserve has been reported in accordance with the 2012 Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves as published by the Joint Ore Reserves Committee of the Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists and Minerals Council of Australia ("the JORC Code").

"The increase in the Reserve results from the completion of the Definitive Feasibility Study ("DFS"), the results of which were announced on 17 March 2016, and the detailed work that has been completed on the mining schedule and resource by SRK Consulting (UK) Ltd ("SRK") as part of the DFS.

"Specifically it comprises the tonnage of mineralisation previously reported as an Indicated Mineral Resource which is planned to be mined and then transported to Teesside."

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Gem Diamonds [LON:GEMD] reports a strong start to the year at Letaeng with production in line with plan and prices steady for higher quality goods.

The group recovered 28,698 carats during the period (reflecting a 28% increase on the first quarter of 2015). Ore treated was 1,624,964 tonnes (up 14% on Q1 2015). Recovered grade was 1.77cpht (up 12% on Q1 2015).

Average price of US$1938 per carat achieved for first three tenders in 2016 (US$ 2 157 for the first three tenders of 2015).

Gem Diamonds' chief executive, Clifford Elphick, said: "The prices achieved for Letaeng's top quality and large diamonds have remained steady and have contributed to an average price of US$ 1 938 per carat for the first three Letaeng tenders.

"At Ghaghoo the downsizing of the operation is advanced and the buffer zone around the sand ingress has been successfully created. Development of the second production block on Level 1 has progressed well and will be the main source of ore for the remainder of the year. A parcel of 14 114 carats of Ghaghoo diamonds was sold during the Period for an average of US$ 160 per carat, which is some 7 percent above the previous price achieved in December 2015."

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Amur Minerals Corporation [LON:AMC] has initiated its 2016 field programme ahead of schedule at its Kun-Manie production licence in far east Russia. The company says this is the earliest start to the drilling field season since exploration began in 2004.

A total of 15,000 metres of drilling are planned for completion within the three and a half kilometre long Maly Kurumkon / Flangovy ("MKF") deposit. The prime objective of the drill programme is to generate a large representative metallurgical sample from the deposit for use in the final process design of the ore treatment facilities. Exploration drilling will also be undertaken to convert existing Inferred resources to that of Indicated and to further expand the resource of the MKF deposit. Satellite communications have now been established to the MKF deposit base camp and it has been reported that drilling begun on 5 May 2016.

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Natural resource projects investor Metal Tiger invested GBP100,000 in Thor Mining [LON:THR].

The investor acquired 400 million shares of Thor Mining at 0.025p per share.

Metal Tiger will receive one warrant at 0.05p for each Thor Mining share purchased at 0.025p, with a warrant life of 30 months.

Following completion, Metal Tiger will own 6.97% of Thor Mining's issued share capital.

Metal Tiger CEO Paul Johnson said: "Today's investment is another step in our building process and comes at a time when Thor Mining has recently experienced a strengthening of its finances through the sale of Spring Hill, thus enabling it to orientate toward existing and potentially new project development."

At 3:57pm:

[LON:AAU] Ariana Resources PLC share price was +0.05p at 1.4p

[LON:AMC] Amur Minerals Corporation share price was -0.3p at 4.9p

[LON:BEM] Beowulf Mining PLC share price was -0.13p at 4p

[LON:BKY] Berkeley Energia Ltd share price was 0p at 31.5p

[LON:CEY] Centamin PLC share price was +3.2p at 118.1p

[LON:CHL] Churchill Mining PLC share price was 0p at 17.63p

[LON:CZA] Coal of Africa Ltd share price was -0.13p at 2.75p

[LON:FDI] Firestone Diamonds PLC share price was -0.75p at 30.5p

[LON:FRES] Fresnillo PLC share price was +19.5p at 1168.5p

[LON:GEMD] Gem Diamonds Ltd share price was -0.87p at 134.13p

[LON:HOC] Hochschild Mining PLC share price was +7.25p at 155p

[LON:KMR] Kenmare Resources PLC share price was -0.04p at 0.74p

[LON:LND] Landore Resources Ltd share price was +0.1p at 1.88p

[LON:SXX] Sirius Minerals PLC share price was +0.38p at 18.13p

[LON:VED] Vedanta Resources PLC share price was +10.1p at 391.8p

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