Abstract: The present disclosure is related to a method for determining a bucket and a machine combination operating along with multiple haul trucks of multiple sizes available in a mining site to achieve a target production efficiency. The method includes of providing a material information including at least one of a material category, a material bucket fill factor, and a material density. The method also includes providing a machine information including at least one of a static tipping load. The method includes providing a haul truck information including an average material load carried by the haul truck based on the material category, and available options of the haul trucks and haul truck sizes. Thereafter, the method includes determining the bucket and the machine combination based on analysis of the material information, the loader information, and the haul truck information.