This is going to take a little explanation. In Dec. 1995 - BD completed the auditing of IPM's sampling program and their PUBLIC statement is on the IPM web-site ipmcf.com look at the news releases and select the Dec 15, 1995 one. That release reads pretty wimpy and was the OK'ed version of the REAL statement (OK'ed by BD). BD has the right to tell any client what they can release with BD's name in it. A copy of the REAL statement was inadvertently left at the AZ DOM by IPM's legal council sometime in 1996. According to the AZ DOM -- that makes it pubic information and a friend of mine received a copy of it from them and faxed it to me. I have typed it verbatim as follows:
Behre Dolbear has been assisting IPM in the evaluation of gold at its BRX property since mid-1994. Behre Dolbear, as part of this ongoing effort, recently completed a program of monitoring and evaluating the current exploration and metallurgical testing progtram of IPM. Six days were spent from October 25, 1995, through October 30, 1995, at the start of the recently completed resource drilling program. Tasks included critical evalution of the care taken in the handling, preparation and security of the samples from the initial sample at the drilll rig through its storage in sealed and marked containers at the IPM laboratory in Goodyear, Arizona. Recommendations made to IPM personnel for procedural changes in the handling, splitting, security and preparation of the samples were fully agreed to by IPM. The provisions employed to guarantee full security and integrity of the samples prior to testing were verified. The suitability and adequacy of the sample preparation equipment that was being installed was also evaluated.
Behre Dolbear closely reviewed the current leaching procedures of IPM. In addition, a Senior Asssociate of Behre Dolbear completed the leaching of six samples, carefully duplicating the IPM procedure employed on previous samples.
Samples were prepared by Behre Dolbear and all reagents were supplied from sealed and previously unopened containers. The handling of samples, reagents and resultant leach solutions were under the full control of Behre Dolbear throughout the procedure including final measurement of the solutions and the splitting into individual samples for analysis by laboratories chosen by Behre Dolbear. Behre Dolbear handled the forwarding of the samples to the laboratories.
A second visit was made to the IPM sample preparation and metallurgical testing laboratory from December 10, 1995, through December 12, 1995. At this time a program of sample preparation and metallurgical treatment was being conducted on a well organized and full time basis with up to 60 samples being treated per day. Since the earlier visit, a specific leaching procedure had been adopted as the standard treatment for all samples. It was observed that the sealed 5-gallon containers were opened just prior to sample preparation and placement in the mixers for blending. The remaining steps of splitting the entire sample with rotary splitter, a 1/12 split then pulverized and final preparation of sample of approximately 600-grams in weight, correctly labeled, were completed in a well organized and timely fashion. No unsealed sample containers are allowed to remain overnight, i.e., once the seal is broken on sample containers, the contents are carried through the sample preparation procedures immediately.
Behre Dolbear observed in detail all steps in the sample preparation including proper operation of sample preparation equipment, cleanliness of equipment before and after use in the preparation of each sample, and the systematic recording of data relating to weight, sample number and sample fraction. The keeping of records is detailed and allows prompt recovery of sample splits. Numbering of samples is such that no correlation between samples is possible by the analytical laboratories to which the leach soutions are sent.
This includes a blank sample that is inserted in each days production run.
Close monitoring of IPM laboratory personnel was completed by Behre Dolbear during the sample leaching procedures. Points observed ranged from use of reagents from sealed containers, cleaning of all equipment and glassware between samples, strict adherence to the quantities of sample material and reagents used, to the careful timing of the successive steps in the leaching procedure.
Extraordinary care in the training and supervision of personnel was evident in all instances. The laboratory is well equipped and it appeared that IPM was taking extreme care in all respects.
Behre Dolbear carefully observed the leaching procedure completed on sample splits from six samples that had been subjected to treament the prevous day. Resultant leach solutions were split, packaged for shipment and forwarded for analysis by Behre Dolbear.
IPM also requested that the laboratories undertake analyses for other precious metals. Behre Dolbear notes that other precious metals, including platinum-group elements were reported in some analyses. Behre Dolbear has no opinion as to these occurrences but recommends further evaluations be performed.
CONCLUSIONS
Sampling procedures from the initial drilling through the final preparation for leaching are excellent. Equipment selection, operation and recording of data are well planned and in detail. Labor is well trained and supervised.
Secuirty measures were of primary concern and Behre Dolbear concludes that adequate provisions have been provided by IPM throughout the sampling and leaching phases of the program.
Several hundred samples have been treated with the IPM designed leaching procedure. On the basis of analytical results of 104 samples released to Behre Dolbear, it is concluded that an apparent strong correlation has been established between the analytical results from two industry-recognized laboratories.
Figure 1 illustrates in graphic form the correlation between the analytical results from the two laboratories noted as "IC" and "CT" on the graph and provided to Behre Dolbear. Analytical data from both laboratories and which forms the basis of the graph, are contained in Table 1.
Table 2 summarizes the analytical data relating only to gold-content data from the IC laboratory and shows the correlation of the individual assay results with the location of each 5-foot sample interval within the drill holes.
Behre Dolbear recommends further evaluation to determine the significance of the PGE's reported in some of these analyses. |
