This is a hell of a monster holeOne cubic meter could contain 769 pounds assuming 11.09% Uranium and 3,15 tons per cubic meter. Multiplied with a depth of 31,5 meter you'll get 24000 pounds.
An area of 20 meter by 20 meter (mineralized over 31,5 meter with 11,09% Uranium) would add 10 Mio to the resource.