Between 0.6% and 9.3% of provincial lands exist as more protected wilderness areas, wilderness zones or protected national parks. These protected areas comprise between 48% and 95% of total park lands in the provinces. Commercial timber harvesting occurs in Manitoba’s provincial parks, two Ontario provincial parks, and one national park (Wood Buffalo National Park). Mineral extraction occurs in British Columbia, Alberta, Saskatchewan, Manitoba and Nova Scotia parks. Oil and natural gas wells are found in four Alberta parks, in two Saskatchewan parks and in one Manitoba park.