Abstract: A discharge cone casting for the discharge end of a rotary mill is disclosed which is integrally cast in a single component. The casting specifically consists of a generally flat base member adapted to conform to the discharge end of the mill and having converging sides, a top member having converging sides similar to those of the base member and disposed in overlying relation but also including a portion that extends beyond the base member and curving toward its plane, and an interconnecting web extending transversely between the base and top member to define a generally I-shaped cross section. Mounting bolt holes are formed through the upstanding web to enable the discharge cone casting to be bolted directly to the mill end as a single unit.