Fugro has reported that it has won two major new contracts for geotechnical work on Sirius Minerals new polyhalite mining project in North Yorkshire.
The company has already undertaken site characterisation work for the scheme and the new agreements will see the business undertake seven deep boreholes, rock strength testing and seismic investigation for the new mine near Whitby.
The project will develop the largest high grade polyhalite mine and the ore, which will be extracted via a 37km tunnel, will be used as an organic agricultural fertiliser.
The contracts being undertaken by Fugro will allow a detailed assessment of geological conditions to 500m depth ahead of tunnel boring machine operations along the mineral transport system alignment.
Fugro geophysical lead Rod Eddies said: “Supporting Sirius Minerals’ project, which includes the UK’s longest tunnel scheme, presents an exciting challenge. The information we are obtaining will provide Sirius with a more complete ground model along the tunnel alignment and will help in the design and planning of the tunnel boring machine operations.”
Fugro has previously completed a series of geotechnical investigations across the project under three contract awards between 2013 and 2016. These have included preliminary geotechnical and hydrological investigations at the mine site, seven deep boreholes along the transport corridor and at the export dock, and a challenging deep inclined hole for fault characterisation.
The two latest contracts are already underway, with drilling and sampling expected to continue to the end of the year and geophysical activities to May 2018.