Abstract: A mill includes a housing with a first end portion, a second end portion, and a lateral area disposed therebetween. The housing includes a raw material inlet, an air inlet, a recirculated material inlet, and a material outlet. An impeller is supported by the housing and includes a shaft disposed along the longitudinal axis of the housing, with a plurality of curved blades. A method for milling includes receiving a material of a first size range, introducing the material to an apparatus via a first inlet and introducing air into the apparatus via a second inlet. The method also includes agitating the material via an impeller, where the agitation reduces at least some of the material to a second size range by the time the material reaches an outlet of the apparatus. The processed material is delivered to subsequent processing operations.

Abstract: A mining apparatus and method of its use are disclosed. The apparatus includes a heavy metals separating subsystem and a water recycling subsystem. The heavy metals separating subsystem includes one or more classifying screens positioned to receive raw mining material classify materials to a pre-determined size, a slurry tank receiving water and the classified materials, forming a slurry, and a heavy metals concentrating assembly configured to receive the slurry and separate heavy metals from the slurry. The water recycling subsystem is positioned to receive the tailings and separate the tailings into recyclable water and solid waste. The water recycling system is configured to route the recycled water into the heavy metals separating subsystem for reuse.

Abstract: Methods of use of a portable mining apparatus in qualifying a mining site are disclosed. One method includes positioning a portable mining apparatus at a mining site, and providing raw mining material to the portable mining apparatus. The portable mining apparatus is configured to extract a classified material from the raw mining material. The method includes, based on success in extracting classified material, evaluating the feasibility of the mining site.