Relevance. The deterioration of the quality of the mineral resource base predetermines the need to develop complex-structured deposits with a relatively low metal content in the ores. As a result the volume of mining operations is continuously increasing, while in the process of open-pit mining a large amount of substandard ores are extracted from the subsoil and stored, which in some cases contain a significant share of the deposit metal reserves. Aim. Improving the efficiency of open-pit mining at large gold ore deposits by extracting fine ore from substandard mineral raw materials using an innovative solution that provides flexible quality management of ores involved in processing. Object. Substandard mineral raw materials from one of the gold ore deposits. Results and conclusions. It was established that in the samples of blasted substandard ore mass the gold content in small classes (–15+10, –10+5 and –5+0 mm) is 1.38–2.30 times higher than the average gold content in the samples. In this relation these classes after separation from the ore mass can be profitably processed together with standard poor ore by means of heap leaching. The article proposes a scheme for the extraction and processing of mineral mass from a complex-structured mining block with flexible control of ore quality during transportation, consisting of large-portion sorting of ore in dump trucks and subsequent separation of productive fractions of rational size from substandard ore with different contents of useful components. The separation of productive fractions is carried out at an improved screening and crushing transfer point during ore moving by automobile and conveyor transport. The calculations carried out for one of the extraction blocks of the gold ore deposit under consideration showed that the implementation of the proposed technological scheme will allow additional involvement in processing of the ore mass containing 7.3 % of the metal extracted from the subsoil, which will reduce gold losses with stored substandard ores by 1.62 times.