Calculate the Net Values for gold ore containing 1.3 g/t, 4.5 g/t , 8.0 g/t and 15.7 g/t. Use the input values given below.

Input Values

Mill Recovery Rate	93%
Mill Concentrate Grade	20g/t Au
Smelter Loss	0.7 g/t of Au pulp
Refining Loss	0.25 g/t of Au dorey
Head Grade	1.3 g/t, 4.5 g/t , 8.0 g/t , 15.7 g/t
Au price	$12.50 /g
By-product credit (Ag)	$45.00/t
Production costs (excluding stripping)	$103.00/t
Mining costs	$25.20/t
Milling costs	$95.00/t
General/Administration	$3.20/t
Shipment of mill pulp to mint	$8.20/t of Au pulp
Smelting cost	$45/t of Au dorey
Shipment of dorey to refinery	$45/t of dorey Au
Refining cost	$12.00/t of dorey Au
Selling & Delivery costs	$3.20/g Au metal
General Plant costs	$0.84/g of Au