Mansfield which competes as Nova Centurion. The Sherwood Swimming Baths adjacent to the former Sherwood Colliery was refurbished and opened in January 2010 as the "Rebecca Adlington Swimming Centre". The 25-metre pool was widened at the expense of losing the tiered public seating and has a new, small, endless stroke-improvement training pool with variable-resistance water flow. The complex uses a ground-source heat pump backed by a biomass boiler burning wood pellets prepared from waste by a local wood yard, to reduce its carbon footprint. At the Beijing 2008 Olympic Games, a Mansfield contestant, Rebecca Adlington, won two gold medals, for 400
Swimming at the 2008 Summer Olympics – Women's 400 metre freestyle Wendy Trott, who broke a new African record (4:08.38) in the heats. Earlier in the prelims, Pellegrini, Hoff, Jackson, and Adlington broke one of the oldest Olympic records in the book as they each went under the time of 4:03.85, which had stood since Janet Evans won the gold medal in the event at the 1988 Summer Olympics in Seoul. Prior to this competition, the existing world and Olympic records were as follows: The following new world and Olympic records were set during this competition. Swimming at the 2008 Summer Olympics – Women's 400 metre freestyle The women's 400 metre