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
200 metres at the Olympics Campbell-Brown repeated that feat in 2008. Usain Bolt was the first person to win two Olympic 200 m gold medals at the 2012 Summer Olympics, and at the 2016 Summer Olympics he defended his title to win his third Olympic 200 m gold medal. Merlene Ottey is the most decorated athlete, having won four medals in the event (though none of them gold). Allyson Felix has won three medals, as has Poland's Irena Szewińska. Reflecting how sprint athletes often compete over various distances, many of the medalists in the Olympic 200 metres have had success in the Olympic 100 metres