The move will allow the union to hold an additional vote on a modified version of the Company’s last, best and final (LBF) offer.

If USW Local 9423 does not approve the LBF on May 11, the lockout is now scheduled to commence at 8 a.m. CDT on May 12, 2015.

While the Company is hopeful that the union membership will approve the LBF, the smelter is fully prepared for the lockout and is expected to continue to operate safely and at full production.

Century Aluminum Company owns primary aluminum capacity in the United States and Iceland. Century’s corporate offices are located in Chicago, IL.