Abstract
At least half of South Africa's gold production is presently dependent on CFC11 an CFC12 as refrigerants in water chilling machines used in cooling the underground workings. The South African Government will ratify the revised Montreal Protocol on substances that deplete the ozone layer which will mean CFCs will have to be phased out probably by 1997. HFC134 or HFC22 are possible replacements for CFC but present costs of converting machines are high. The article goes on to discuss the contribution of CFCs and CO{sub 2} to global warming and model simulations and predictions of climate change. Likely effects of growing concern about global warming on the coal mining industry are the possible limitations on the use of coal and the increased need for clean coal technology. 12 refs., 5 figs., 3 tabs.
Citation Formats
Greeff, J C, and Bailey-McEwan, M.
Mining and global environmental challenges.
South Africa: N. p.,
1992.
Web.
Greeff, J C, & Bailey-McEwan, M.
Mining and global environmental challenges.
South Africa.
Greeff, J C, and Bailey-McEwan, M.
1992.
"Mining and global environmental challenges."
South Africa.
@misc{etde_7303859,
title = {Mining and global environmental challenges}
author = {Greeff, J C, and Bailey-McEwan, M}
abstractNote = {At least half of South Africa's gold production is presently dependent on CFC11 an CFC12 as refrigerants in water chilling machines used in cooling the underground workings. The South African Government will ratify the revised Montreal Protocol on substances that deplete the ozone layer which will mean CFCs will have to be phased out probably by 1997. HFC134 or HFC22 are possible replacements for CFC but present costs of converting machines are high. The article goes on to discuss the contribution of CFCs and CO{sub 2} to global warming and model simulations and predictions of climate change. Likely effects of growing concern about global warming on the coal mining industry are the possible limitations on the use of coal and the increased need for clean coal technology. 12 refs., 5 figs., 3 tabs.}
journal = []
volume = {11:3}
journal type = {AC}
place = {South Africa}
year = {1992}
month = {Apr}
}
title = {Mining and global environmental challenges}
author = {Greeff, J C, and Bailey-McEwan, M}
abstractNote = {At least half of South Africa's gold production is presently dependent on CFC11 an CFC12 as refrigerants in water chilling machines used in cooling the underground workings. The South African Government will ratify the revised Montreal Protocol on substances that deplete the ozone layer which will mean CFCs will have to be phased out probably by 1997. HFC134 or HFC22 are possible replacements for CFC but present costs of converting machines are high. The article goes on to discuss the contribution of CFCs and CO{sub 2} to global warming and model simulations and predictions of climate change. Likely effects of growing concern about global warming on the coal mining industry are the possible limitations on the use of coal and the increased need for clean coal technology. 12 refs., 5 figs., 3 tabs.}
journal = []
volume = {11:3}
journal type = {AC}
place = {South Africa}
year = {1992}
month = {Apr}
}