- Kibo Mining [LON:KIBO] says phase 1 of the Mbeya coal to power project environmental and social impact assessment was successfully completed upon receiving notice from the Tanzanian government that the ESIA studies for the Mbeya coal mine and Mbeya power plant have both been accepted and officially registered.

Environmental certification for the MCPP requires that the Mining and Power components must be registered as separate ESIAs, whilst successful registration requires the submission of a comprehensive project specific ESIA brief and official registration documentation.

Chief executive Louis Coetzee said "We are very pleased with progress on the ESIA and particularly with the fact that the registration was accepted at the first attempt. ESIA registrations frequently fail on the first attempt and can become a significant delay factor. Our strong and cooperative relationship with the Tanzanian government coupled with our understanding of the process has enabled us to expedite this stage of the project. We have already commenced preparatory work for Phase 2 ahead of submitting the final ESIA to the NEMC. The ESIA is the third key component, alongside the Mining and Power Definitive Feasibility Studies, for the Integrated Bankable Feasibility Study."

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Sirius Minerals [LON:SXX] its clear priority is the rapid development of the world`s largest and highest-grade polyhalite resource, but the increased optionality of its significant additional resource of high-grade salt is an exciting future business opportunity.

"The bolt-on to the core infrastructure could allow us to make an opportunistic entry into a commoditised global market, generating an additional valuable revenue stream," said MD Chris Fraser.

A JORC-compliant Inferred Mineral Resource ("the Resource") of halite (salt) of 550 million tonnes has been delineated at the Company's North Yorkshire polyhalite project (the "Project").

The Resource is within the immediate polyhalite mining area and will be accessible from the planned underground mining infrastructure for the Project and has an in situ mean grade greater than 93% NaCl, which is suitable for consumption in the de-icing salt market.

It also includes 210 million tonnes of higher grade halite with a mean grade greater than 95% NaCl.

With the majority of the key infrastructure (shafts and tunnel) at the Project able to extract 20 million tonnes per annum ("Mtpa") of ore, salt could also be extracted as polyhalite production levels vary according to the Company's price and volume strategy.

The Company's salt scoping study shows that it could extract up to 2 Mtpa for an investment of up to US$29 million as an optional bolt-on to the existing polyhalite mine plan. The assumed capital and operating estimates are based on a +/- 25% accuracy level and have been reviewed by SRK Consulting (UK) Ltd.

It would adopt an opportunistic approach, bringing on supply when market demand for salt was strong, although not at the expense of its polyhalite production.

The Company's Project and its port is centrally located and able to readily access the two primary target markets of Western Europe and North America which, depending on the winter weather conditions, are between 10 to 15 Mtpa and 20 to 30 Mtpa in size respectively.

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Highland Gold Mining [LON:HGM] has announced results from a JORC (2012) compliant mineral resource and ore reserve estimate for the Kekura project reported in the framework of a pre-feasibility study recently completed by international consultancy Wardell Armstrong International (WAI).

The results corroborate the previously-announced Russian-compliant reserves (C1+C2 category) approved by regulators last year.

An executive summary of the WAI (2016) report will be available shortly on the company's website ( The updated mineral resource estimate is based on a database comprised of 671 drill holes totalling 114,681 metres and incorporates data from the Company's drilling campaigns in 2013 and 2014.

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The sector's biggest riser was GCM Resouces [LON:GCM] - up by more than 26.3% in late trading. The biggest faller was Thor Mining [LON:THR] - down by over 14.7%.

At 4:10pm:

[LON:BEM] Beowulf Mining PLC share price was 0p at 4p

[LON:BKY] Berkeley Energia Ltd share price was -0.5p at 31p

[LON:CEY] Centamin PLC share price was -6.9p at 107.2p

[LON:CHL] Churchill Mining PLC share price was -0.38p at 17.5p

[LON:CZA] Coal of Africa Ltd share price was +0.06p at 3.02p

[LON:FDI] Firestone Diamonds PLC share price was 0p at 30.5p

[LON:FRES] Fresnillo PLC share price was -83.5p at 1060.5p

[LON:GCM] GCM Resources PLC share price was +3p at 14.38p

[LON:GEMD] Gem Diamonds Ltd share price was -1.75p at 132.25p

[LON:HGM] Highland Gold Mining Ltd share price was -3.75p at 92.25p

[LON:HOC] Hochschild Mining PLC share price was -8.75p at 145.25p

[LON:KIBO] Kibo Mining share price was +0.25p at 4.25p

[LON:KMR] Kenmare Resources PLC share price was +0.04p at 0.75p

[LON:SXX] Sirius Minerals PLC share price was +0.13p at 18.38p

[LON:THR] Thor Mining PLC share price was -0p at 0.03p

[LON:VED] Vedanta Resources PLC share price was -13p at 377p

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