02.03.2015 Views

COPY OF FINAL PROSPECTUS - Mirabela Nickel

COPY OF FINAL PROSPECTUS - Mirabela Nickel

COPY OF FINAL PROSPECTUS - Mirabela Nickel

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

The flotation circuit design is based on the metallurgical testwork that was completed and includes a<br />

conventional rougher/cleaner arrangement. RSG Global has concluded that based on the high quality of the<br />

flotation testwork, there would be a high degree of confidence in the established design parameters and as such<br />

if normal engineering practices are followed, this section of the plant would be capable of achieving the results<br />

observed in the testwork.<br />

The plant design allows for the retro fitting of both a pebble crushing circuit and a regrind circuit if<br />

necessary. In addition, the target plant availability is 91.3% after allowing for interruptions from the state grid<br />

power supply. A water balance was completed by Golders Associates and confirms that there are adequate water<br />

resources available for the proposed 4 million tonnes per annum throughput.<br />

Tailings Storage Facility<br />

The design of the tailings storage facility was completed by independent consultant Golder Associates<br />

Pty Ltd. to a pre-feasibility study. The design concept includes waste rock embankments, a fully HDPE lined<br />

facility, a fixed decant structure, a tailings underdrainage system and a liner underdrainage system.<br />

Capital Cost Estimates<br />

GRD Minproc Limited completed capital cost engineering estimates for the Santa Rita Project with an<br />

accuracy of 30% for a four million tonnes per annum nickel concentrator appropriate for the Santa Rita<br />

resource with the inclusion of an ‘accuracy provision’ of +10% on all cost estimates as a replacement for<br />

contingencies.<br />

The capital cost estimate including processing plant, infrastructure, port facilities, EPCM, commissioning,<br />

first fills and spare parts of US$223 million is considered by RSG Global to be reasonable and is based on<br />

detailed equipment lists and take off quantities with real pricing for major equipment.<br />

A summary of the capital cost estimate with an accuracy of 30% is set out below:<br />

Capital Cost Estimate (30%)<br />

US$<br />

Primary Crushing 22,201,683<br />

Grinding Circuit 38,950,280<br />

Flotation Circuit 11,606,491<br />

Concentrate Thickening & Filtration 3,599,750<br />

Tailings Thickening & Storage 15,583,551<br />

Reagents & Services 23,960,157<br />

Electrical & Instrumentation 40,761,710<br />

Laboratory 2,244,429<br />

Port Facilities 7,915,325<br />

Admin, Access, Workshops, etc. 12,099,058<br />

Mining, Buildings & Workshops 4,779,500<br />

Construction Services 5,282,515<br />

Spares & First Fills 3,132,360<br />

Commissioning 5,302,000<br />

EPCM 25,300,000<br />

Total 222,718,809<br />

36

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!