"Most of the issues raised in the documents relate to the public Independent Monitor Report released in October 2014 and address the 2012-2013 period of operation," Glencore stated. "We also note that the documents released are nine months old." Glencore said the mine had made significant improvements since October 2014 in relation to the management and treatment of waste rock, the tailings storage facility and water quality on-site. "MRM [McArthur River Mining] is committed to managing a safe, environmentally sustainable and profitable mining operation that continues to make a valuable contribution to the community and the Territory," Glencore stated. Last October the NT Environment Protection Authority issued an audit notice to the mine following complaints from the public about smoke and fumes from the waste rock dump. The McArthur River Mine, 900km southeast of Darwin in a remote area of the NT, is one of the world's largest zinc and lead deposits.