The news comes as the owners of Kilroot announced plans to install clean-up equipment at the plant near Carrickfergus at a cost of Â£35 million.
The plant near Carrickfergus is the largest owned by Kilroot.
( z1 have-degree :ARG1 ( z2 plant :ARG1-of ( z3 near :ARG2 ( z4 city :name ( z5 name :op "Carrickfergus" ) ) ) :ARG1-of ( z6 own :ARG0 ( z7 company :name ( z8 name :op "Kilroot" ) ) ) ) :ARG2 ( z9 large ) :ARG3 ( z10 most ) )