Cigar Lake Mine is situated at the southern rim of the Athabasca Basin approximately 650km north of Saskatoon and will have a predicted operational life of up to 41 years.

key factors:

	steel fibre reinforced segmental lining
	detail design to allow for ground and lining deformation under freeze pressure
	design of steel encased section to allow for large drill holes
	provision of site engineers and foremen for training and supervision

Design development, detail design and site engineering services for the development of over 40 mining drifts below an ore body using 4.25m diameter fibre reinforced segmental linings.

The drifts are being constructed at two levels using a purpose built rock TBM to provide access to allow for ground freezing operations and ore extraction to take place.

During construction, Halcrow provided site engineers and site foremen with TBM and segmental lining experience to help train the local work force and optimise construction rates to suit the TBM and the mine development programme.