Table 1: Summary of the Smith Ranch ISL pilot programme

  Q-Sand   O-Sand 

Leaching period October 1981 -
November 1984
  August 1984 -
January 1991
Restoration period 

 November 1984 -
May 1986

   
Restoration certified 

 August 1987

   

Pilot flow rate 6.3 l/s   9.5 l/s
5-spot pattern size 30 m x 30 m   36 m x 36 m

Ore depth 152 m   229 m

In-place reserves 61 235 kg   103 480 kg
Production 35 380 kg   96 615 kg
Recovery 58%   93%

The Smith Ranch Uranium Project:
R. Mark Stout & Dennis E. Stover

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