Overburden Drilling Management
Quality Control…
ODM treats your samples with extra care:
- Incoming samples are immediately catalogued and organized. A character subsample is archived from every sample.
- In every circuit, the sample processing sequence and operator is recorded.
- The quality of the mineral separation is visible at every concentration stage (shaking table, heavy liquid, magnetic, electromagnetic) as well as during final indicator mineral logging; no blind (enclosed) concentrators are used.
- All shaking tables are customized to eliminate indicator mineral carryover.
- Blank samples are inserted and processed between projects.
- Gold grains are observed immediately in the initial tabling circuit and extra blank samples are inserted after anomalous samples.
- Sieves are meticulously cleaned after each concentrate.
- All sample fractions and subfractions obtained during processing are weighed and tallied to identify potential sample mix-ups. Any unreconcilable weight imbalances are assessed and immediately reported to the client in writing.
- Regular heavy mineral recovery tests are conducted on all shaking tables.
- Kimberlite indicator mineral results are controlled by random blind tests on spiked samples with full disclosure of test procedures and results.
- Unusual mineral grains or other suspect particles observed during gold micropanning or indicator mineral logging are immediately resolved by SEM analysis.
- Indicator minerals are meticulously organized by species and grain size in separate vials.
|
|