- Anglo American's [LON:AAL] shares slipped back despite increased production from its operations in the second quarter to the end of June with the exception of platinum.

Kumba Iron Ore production increased by 2% to 11.5 million tonnes following a solid performance at both Sishen and Kolomela. Waste removal at Sishen remained a key operational focus during the quarter.

Export metallurgical coal production increased by 10% to 4.8 million tonnes due to productivity improvements at open cut operations and Grasstree, partially offset by a longwall move at Moranbah and subsequent geotechnical issues with the cutting panel.

Export thermal coal production decreased by 5% to 8.1 million tonnes primarily due to lower production from Drayton in Australia. Production from the South African assets increased due to improved operational performance.

Copper production increased by 6% to 194,400 tonnes, with improved production from Los Bronces and Collahuasi due to higher throughput, partially offset by expected lower production at El Soldado.

Nickel production increased by 25% to 10,600 tonnes driven by continued improved operational stability at Barro Alto, prior to the planned rebuild of the furnaces commencing in the second half of the year.

Niobium production was flat at 1,100 tonnes.

Phosphates concentrate production was flat at 349,500 tonnes. Fertiliser production decreased by 8% due to maintenance stoppages and throughput constraints.

Platinum equivalent refined production decreased by 40% to 358,000 ounces as a result of the industrial action at Rustenburg, Amandelbult and Union mines in South Africa. A three-year wage agreement reached on 24 June ended five months of industrial action.

Diamond production increased by 7% to 8.5 million carats, largely due to higher output at Venetia following the recovery from the pit flooding in 2013.

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Trans-Siberian Gold [LON:TSG] reports mine development at Asacha in the second quarter of 2014 comprised 847 metres while ore extraction (including ore from stoping and mine development) amounted to 50,875 mt.

In the first half of 2014, an average 13,259 mt per month was processed through the Asacha plant.

Second quarter production comprised 10,285 oz. refined gold and 13,441 oz. refined silver, the highest quarterly totals to date.

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Griffin Mining [LON:GFM] has confirmed that all the resolutions put to shareholders at the annual general meeting yesterday were duly passed.

Resolution 9, relating to various proposed amendments to the bye-laws of the company, was withdrawn.

* * *

The sector's biggest riser was Stratex International [LON:STI] - up by more than 12.6% in late trading - while the biggest fallers were African Minerals [LON:AMI] and Orosur Mining [LON:OMI] - both down by more than 5.8%.

At 4:19pm:

[LON:AAL] Anglo American PLC share price was -24.25p at 1539.75p

[LON:AMI] African Minerals Ltd share price was -4.5p at 72p

[LON:AQP] Aquarius Platinum Ltd share price was -0.37p at 22.88p

[LON:BEM] Beowulf Mining PLC share price was +0.13p at 3.25p

[LON:BKY] Berkeley Resources Ltd share price was +0.01p at 14.38p

[LON:CEY] Centamin PLC share price was +0.7p at 70.7p

[LON:CHL] Churchill Mining PLC share price was 0p at 19.5p

[LON:CZA] Coal of Africa Ltd share price was -0.04p at 3.8p

[LON:FDI] Firestone Diamonds PLC share price was -0.37p at 37.38p

[LON:FRES] Fresnillo PLC share price was -17.75p at 899.25p

[LON:GEMD] Gem Diamonds Ltd share price was +3.38p at 188.63p

[LON:GFM] Griffin Mining share price was 0p at 31.25p

[LON:HOC] Hochschild Mining PLC share price was -4.15p at 158.15p

[LON:KMR] Kenmare Resources PLC share price was +0.13p at 15.13p

[LON:STI] Stratex International PLC share price was +0.38p at 3.35p

[LON:TSG] TransSiberian Gold PLC share price was 0p at 12.75p

[LON:VED] Vedanta Resources PLC share price was -13p at 1109p

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