NRW, Bathurst elevated to ASX200

Perth-based companies NRW Holdings and Bathurst Resources have been elevated to the S&P Australian Stock Exchange top 200 index as part of ratings agency Standard and Poor's quarterly re-weighting of key indices.

Also joining the ASX200 are chemicals testing and technical services company Campbell Brothers, and Aston Resources.

Kambalda-focused nickel miner Mincor Resources was bumped from the top 200 list, along with Carnarvon Petroleum, Eldorado Gold and ROC Oil Company.

The changes take effect from the close of trade on June 17.