Rob Carr Pty Ltd phone 5 Bellows St Welshpool, Western Australia 6106 map Slimdrill Contracting Pty Ltd phone 31 Felspar St Welshpool, Western Australia 6106 map if (!IN_DEV) { ?> } ?> Triefus Industries (Aust) Pty Ltd phone 33 Felspar St Welshpool, Western Australia 6106 map