Whitemountain Quarries applied for planning permission to dump 300 tonnes of asbestos at the site every year as well as an extra 2,400 tonnes of toxic waste.
Sinn Féin west Belfast MP Paul Maskey said it would have a hugely detrimental effect on the west of the city.
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He said: "These plans would allow for 2,400 tonnes of toxic waste along with 300 tonnes of asbestos to be dumped on the doorstep of West Belfast each year.
"The west of the city already features highly in terms of health inequalities - this move can only compound that.
"In environmental terms it will impact on the Black Mountain, its wildlife and environment as well as damaging the mountain's economic value and potential for the city.
"The Belfast Hills is a popular walking destination for people from all over the city as well as the many tourists that flock to Belfast."
(CD/MH)
