  We present new supersymmetric solutions of five-dimensional minimal
supergravity that describe concentric black rings with an optional black hole
at the common centre. Configurations of two black rings are found which have
the same conserved charges as a single rotating black hole; these black rings
can have a total horizon area less than, equal to, or greater than the black
hole with the same charges. A numerical investigation of these particular black
ring solutions suggests that they do not have closed timelike curves.
