Nov. 20: Relatives of the miners and contractors trapped in the Pike River Mine leave a meeting after being briefed by mine management,in Greymouth, New Zealand.
Nov. 20: A signboard of the road closure stands near the Pike River mine where 29 workers were trapped underground in Greymouth, New Zealand.
Nov. 20: Pike River Mine Ltd's chief executive Peter Whittall holds one of the gas bags they are using to measure gas content in the New Zealand mine as they work to rescue 29 workers missing after a large explosion.
Nov. 19: An aerial view shows the Pike River Coal mine, the site of an underground explosion, near Atarau, New Zeland. Five workers, dazed and slightly injured, stumbled to the surface, while more than two dozen remained missing.
This undated aerial photo provided by Pike River Coal is the Paparoa Ranges where the Pike River Coal mine operates near the town of Atarau on the west coast of New Zealand's South Island.
In this photo taken on Jan. 17, 2007, men work near the Pike River Coal Mine portal in Atarau, New Zealand. An underground explosion ripped through the Pike River Coal Processing Plant Nov. 19, 2010.
Twenty-nine workers in New Zealand are missing after a powerful blast tore through a coal mine. Repeated attempts to contact the 16 employees and 13 contract miners at the Pike River mine have failed, and it is not known if they are still alive.