Sustainable manufacturing will be the dominate factor in the design of the future factory. Any manufacturing operation within these factories will affect the environment, be it through the waste it creates, the resources it uses, or the energy it consumes. All can be significant, but not all have been properly examined or documented. This paper presents an initial investigation into these issues related to subtractive machining and evaluates research finding against the waste hierarchy. The paper concludes by discussing the findings and presents some requirements and suggestions for the factory of the future.