Unsupported browser

For a better experience, please update your browser to its latest version.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

First Mining completes drilling for dyke foundations

spingpole gold 1

First Mining Gold Corporation has completed a geotechnical drilling programme to investigate the sediments and bedrock for the dykes at its Springpole Gold Project in Canada.

The geotechnical drilling programme undertook to investigate the lake bed sediments and bedrock along the proposed alignment of the coffer dam.

Results showed that the thicknesses of soft lake bed sediments were much thinner than anticipated and are absent in some areas, which will mean that dredging and removal of the lake bed sediments beneath the footprint of the dykes may not be necessary.

Springpole is one of Canada’s largest undeveloped gold projects, covering 32,448ha.

First Mining Gold president and CEO Jeff Swinoga said: “We are very pleased that the preliminary findings show the bedrock beneath the proposed dykes will provide a competent foundation.

“We see this as a significant step forward in advancing our Springpole Project since this confirms that the dykes can be constructed in the area that was proposed in Springpole’s preliminary economic assessment published last year.

“We have also engaged Tetra Tech to complete the next step which is to finalize the design work on the dyke structures”.

spingpole gold

spingpole gold

Packer tests undertaken within the underlying bedrock gave inflow rates of less than 1.5x10-5m/s.

The pre-feasibility level geotechnical drilling programme has been completed over the 800m long footprint of the dykes which are required to dewater the north bay of Springpole Lake.

Eleven holes were drilled totaling 171.6m of rock, 17.5m of overburden, and 55.7m of water.

Water depth over the planned dykes ranges from 1.6m to 11.7m, averaging 5m deep. Packer testing was undertaken in all boreholes to measure the bedrock hydraulic conductivity, which showed low to very low values generally ranging between 1.5×10-5m/s and 1.6×10-7m/s.

Tetra Tech will use this data to design and develop a construction cost estimate for the dykes as part of the prefeasibility level study.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Links may be included in your comments but HTML is not permitted.