inventory reconciliation

[voltron888]

i need some help..

does anyone know how to reconcile inventory figures after a shipment?

the scenario is this

we are using a "non payment based" weigher on our filter presses. the weights registered on this weigher is what we use when we report the filtered concentrates on our production reports. when shipment time comes, we use instead "draft survey" weight to deduct the shipped weight from our inventory, the trouble is, the values are way too far.. ie the shipped weight based on our data is 4246DMT but the weight based on survey is only 4000DMT..
to continue, we have a left over inventory which is then surveyed. using the volume obtained and a bulk density figure, we then calculate the tonnage and then compare this with the calculated left over inventory in which the values are not even close...

does anyone think that our procedure to reconcile using surveys and calculation would even work? thanks to anyone who might reply

[barrywills]

I would suggest that you contact Dr. Rob Morrison at JKMRC ([e-mail]) who has just published a book on this subject. See www.min-eng.com/general/201.html

[ajohnston]

Hey Voltron,
Some things to check for are moisture at each stage, and major and minor element assays at each stage.
Some concentrates might continue to dry after filtering, some others might suck up oxygen or loose a volatile.
Minor element assays can help with theft detective work...
Best of luck. Adam

[voltron888]

barry,mr johnston,

thank you for the replies..what we did was just install another weigher at our concentrate shed. in case that we need to verify the calculated leftover weights with the 'actual' weights, we can just weigh all the leftovers after shipment.

[powermypah]

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