33rd annual international Pittsburgh coal conference : (IPCC 2016) : coal--energy, environment and sustainable development : Cape Town, South Africa : 8-12 August 2016 : PCC conference 2016 : PCC16-Cape Town : Pittsburgh coal convention : Aug 2016, Cape Town, South Africa.
33rd annual international Pittsburgh coal conference : (IPCC 2016) : coal--energy, environment and sustainable development : Cape Town, South Africa : 8-12 August 2016 : PCC conference 2016 : PCC16-Cape Town : Pittsburgh coal convention : Aug 2016, Cape Town, South Africa.