Maine's natural resources -- granite, limestone and slate in particular -- along with its excellent ports made it a leader in mining and production of the valuable building materials. Stone work also attracted numerous skilled immigrants.
Workers in Maine have labored in factories, on farms, in the woods, on the water, among other locales. Many of Maine's occupations have been determined by the state's climate and geographical features.
The Waldo-Hancock Bridge is in the process of being dismantled after over 70 years of service. The Maine State Archives has a number of records related to the history of this famous bridge that are presented in this exhibition.
The slate was made of clay or volcanic ash. Slate, a rock formed from shale and mined by quarrying, had low heat and not very much pressure put on it.