During 2004, we took 6068 workplace-condition samples across our sites. We also conducted more than 16000 tests to verify the effectiveness of our radiation protection measures at Olympic Dam in the 2003-04 year to 30 June 2004 which is reported in line with the South Australian Government requirements.

Materials or agents above WMC standards were recorded in 7.5 percent of test results. In each case, we either initiated further monitoring activity to identify why our standard was exceeded or acted to reduce the potential for exposure of our workforce.

In response to growing scientific evidence linking nickel exposure to potential negative health effects, we have tightened our nickel exposure standards. Our standards are now up to 10 times stricter than the equivalent Australian regulatory standards. We are working towards upgrading our emission and exposure controls at our sites-during the current five year strategic investment period-to meet these stricter internal exposure standards.

Laboratory tests have shown that high nickel exposure can have a toxic impact on rat reproductivity. While this effect has not been shown in humans, as a precaution, we have initiated a test program at our nickel operations in Western Australia to establish baseline nickel-in-urine levels. We will use the results to identify nickel exposures and any elevated nickel levels in our people.

During the year, a company-wide review of our workplace noise-management procedures and practices identified further work that is required at all sites to ensure that our people are protected against high levels of workplace noise.

We did not record any instances of radiation exposure standards being exceeded at Olympic Dam during the year.

We recorded six cases of workplace illness relating to hearing impairment and dermatitis during 2004.

• View the 2004 Performance results.
• Read about our approach to Workplace Monitoring.