A number of local mining companies have moved up the stock market rankings, with contractor Ausdrill included in the S&P ASX 200 index, while South32 has been admitted into the top 20 as part of the market’s quarterly rebalance.

A number of local mining companies have moved up the stock market rankings, with contractor Ausdrill included in the S&P ASX 200 index, while South32 has been admitted into the top 20 as part of the market’s quarterly rebalance.