Area still benefits from its natural resources The area’s natural resources have played a significant role in the Brainerd Lakes Area’s historical development and growth. That hasn’t changed. Natural resources continue to impact the local economy. • Iron ore mining – Many of the mines in Crosby have been restored and serve as a recreational paradise. • Timber – The area has vast forests of hardwoods and conifers. • Manganese – A locally discovered deposit, the Brainerd Lakes Area may have the richest concentration in the country. • Gravel – Large sand and gravel pits are located here. • Peat – Peat is harvested here to use in agricultural and water treatment applications. • Methane gas – The Crow Wing County Landfill recovers methane gas. • Renewable energy– Local companies are leading the way in renewable energy initiatives. Natural Resources News Stories Nothing found.