June 27 (Reuters) - Alumina Ltd AWC.AX :
* Alumina files 'answer and counterclaim' in US proceedings AWC.AX
* Says Alumina refutes all substantive elements of alcoa's claim
* Alumina has refuted all substantive elements of alcoa's claim and made its
own counterclaim
* Alumina will seek to assume rights in respect of the sale of its equity share
of Alumina and bauxite produced by awac
* Alumina counterclaims that alcoa's planned `separation' would breach awac
joint venture agreements and cannot proceed without alumina's consent
* Alumina is seeking court declarations to prevent Alcoa (NYSE:AA) taking further steps
in its separation without alumina's consent
* Says alcoa's reliance on the previous western mining corporation (wmc)
demerger as a defence is without merit
* Source text for Eikon ID:AWC.AX