... lithological and alteration mapping, petrographic studies and the logging of samples is minimal in most operations compared to the cost of the sampling method. ...
... IMPll,OVED TYPE OF COAL HIN DUST SAMPLING PUMP WALLACE-FISHER TNSTIlUMENT COM.PANY ... e months. We also roughly estimated the added cost of building ...
... The high cost of sampling systems is largely due to the fact that indiv- idual mechanical type sampling units must be installed at the discharge end of ore ...
... as shown by another example in Figure 8, invisible cost may occur. The Fundamental Error FE referred to in Figure 8 is the sampling error generated by a ...
... For example, if the grade control sampling was inadequate due to poor geological control of the sampling pattern, geology accepted the cost. If the ...