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细菌氧化工艺已成功地在矿山现场的中间工厂中用于处理难浸金精矿。细菌可选择性地氧化难浸出的硫化矿物，从而使金暴露出来，随后用氰化物浸出氧化后的精矿，金浸出率可提高到９０％以上。由实验室数据放大设计的中间工厂，其规模大小刚好可用标准运输工具运输。用于氧化难浸金矿的细菌是一种可耐５５℃的天然混合培养菌。因此该氧化工艺很适合于处理澳大利亚和北美—些气候炎热地区的金矿。中间工厂在矿山运行了六个多月，细菌氧化工艺在现场条件下的操作性能与实验室一样。说明该混合培养菌在通常矿山操作条件下足够强壮，可以经受往较大变化的物料和操作环境，达到满意的氧化效果。该工艺过程可在专家很少参与的情况下由现场人员进行操作。从中间工厂试验中收集了适合多种精矿物料的进行商业性工厂设计用的数据，完成了该工艺的可行性研究并对建厂投资和操作费用作了估算。
The bacterial oxidation process has been successfully used to treat difficult-to-leach gold concentrates at an intermediate site at a mine site. Bacteria can selectively oxidize the refractory sulphide minerals so that the gold is exposed and subsequent leaching of the oxidized concentrate with cyanide can increase the gold leaching rate to more than 90%. An intermediate plant designed to be enlarged by laboratory data is sized and shipped with standard transport. The bacteria used to oxidize the refractory gold ore is a natural mixed culture that can withstand 55 ° C. The oxidation process is therefore well suited to deal with gold mines in some hot climates in Australia and North America. The intermediate plant has been operating in mines for more than six months and the bacterial oxidation process operates in the same manner as the laboratory in field conditions. Indicating that the mixed culture of bacteria in the mine operating conditions are strong enough to withstand large changes to the materials and operating environment to achieve a satisfactory oxidation effect. The process can be operated by field personnel with little involvement of experts. Data from commercial plant designs suitable for a wide range of concentrate materials were collected from intermediate plant trials, a feasibility study of the process was completed, and investment in plant construction and operating costs were estimated.