Downer EDI has posted an $11.1 million first-half loss, dragged down by a goodwill impairment on its mining operations, write-downs from its freight rail divestment and redundancy costs from its recently acquired Spotless.

Downer EDI has posted an $11.1 million first-half loss, dragged down by a goodwill impairment on its mining operations, write-downs from its freight rail divestment and redundancy costs from its recently acquired Spotless.