valley before the 1948 Fraser River flood wiped it out. In more recent times one of these buildings was for a while converted into the province's largest marijuana grow-op, in a scandal involving one of the town's wealthiest families. Mission is noted as the home of a long-established professional dragstrip, Mission Raceway Park, which was moved in relatively recent times outside the dyking of the lower part of town to reduce noise in residential and commercial areas nearby. In 1972 a large tract of land in central Mission's Ferndale area, flat upland at the top of the slope above downtown, was acquired by the federal government and developed into two large penal facilities. One is a minimum security facility, and the other is a medium security prison. The northern part of the district, and the wilds of the Stave River basin to the north of it, are home to a few wilderness work camps for young offenders and low-risk convicts; these camps have over recent decades participated in the ongoing clearing of vast forests of flooded-out trees from the inundated areas of Stave Lake, opening the lake to water recreation and public exploration. On March 29, 2021, the District of Mission was reclassified as a city. Economy Historically, forestry, hydroelectricity and agriculture were Mission's chief resource sectors and provided the basis for varied related retail and service activities. In recent history, transportation improvements have enabled the manufacturing sector to expand beyond sawmilling and food processing. Forest and wood related industries dominate the manufacturing sector, with an emphasis on redcedar shake and shingle mills. Mission also holds the only municipal tree farm license in British Columbia. Agriculture is mostly restricted to a narrow belt along the Fraser River, and the unincorporated Dewdney-Deroche district east of Mission contains the majority of the farms in the area. There are about 96 commercial and hobby farms in the area. Dairy is the chief agricultural enterprise; other income sources include poultry, hogs, beef and vegetables. Mission's largest employer is the local school district, School District #75, and its second largest employer is the District (i.e. the municipality) itself. Transportation Transportation infrastructure includes Abbotsford-Mission Highway 11, and the Lougheed Highway 7. Mission is also accessible through commuter rail, the West Coast Express, which runs five trains in each direction a day, five days a week, between Vancouver and Mission City Station. Bus service in Mission is