A Heap Leach Plan

My Concept I’ll build one great big pad I’ll fill it in with rows of material about 40 feet high I’ll then fill in between the rows I’ll then build another line of rows on top

The Vision

Do Some Excel Estimating

A Quick Handle on Trucks Pad Crusher Quick Estimate Haul Distance (about 4000 feet) Quick Estimates from Cat Handbook Cat 793 takes about 6 minutes Loaded to go 4000 feet And about 2.1 for an empty return About 1.2 minutes to dump About 1 minute to load Truck will take about 10.3 minutes A cycle (I can now start guessing my Truck requirements)

Another Cat Book Quicke A D11 can push 2600 loose cubic yards of material 100 feet in an hour I’ll dump and have the dozer push the material out I’ll work from the far end back I’ll do two piles at a time so they will be out of sync with each other.

Cost Estimating With Means I will need to Grade about 3.28 million Square yards At 60 cents each About 2 million

I Need a Clay Layer If I put in a 2 feet Of compacted Clay 1.39/cubic yard For clay fill 3.28 million X.67 X1.39 About 3 million

I Need to Compact the Clay Looks like about 86 cents per Cubic yard 2.2 million cubic Yards at 86 cents Each $1.9 million

Next I Need to Put Down a Geomembrane Looks like about $1.03/square yd 3.3 million Square yards at $1.03 $3.4 million

Next I Need a Rock Drainage Layer About 12 inches Of spread Gravel at $5.55/ square Yard 3.3 million Square yards $18.2 million Total 28.5 million

So What Else Do I Need I need an estimated flow rate for solutions I need an SX plant flow rate This will let me guess on Preg pond size –I will need to build the Preg pond I will need to buy pumps and sprinklers for the solution distribution I’ll need to run the pumps and maintain the water lines I’ll need to figure my truck haulage I’m assuming I already have my delivery cost, crushing costs, SX-EW costs