Jason Chandler was a character built for the Disneyland concept of Discovery Bay, which was never built and the early stories of Big Thunder Mountain Railroad and a leading role in the Society of Explorers and Adventurers.
Chandler was a young inventor who built a drilling machine that could drill right into the heart of Big Thunder Mountain. His invention was used when 26 miners were caved in alive in the mines. After helping the miners escape, an earthquake trapped Jason and his drilling machine within the mountain. Chandler was able to fix his machine and drill his way back out, but knew the greed that was overtaking the mining company and the vengeance that Big Thunder was taking on them was enough of a reason to leave the town. He took his share of the gold and established a scientific outpost in northern California, called Discovery Bay.
“Jason Chandler.” Disney Wiki, disney.fandom.com/wiki/Jason_Chandler.
“Disney's Secret Society: A Glance into the Society of Explorers and Adventurers.” Lifeinfantasyland.com, 5 Apr. 2019, www.lifeinfantasyland.com/disneys-secret-society-a-glance-into-the-society-of-explorers-and-adventurers/.
Littaye, Alain. “Disney's Secret Society of Explorers and Adventurers.” Disney's Secret Society of Explorers and Adventurers, 1 Jan. 1970, disneyandmore.blogspot.com/2018/08/disneys-secret-society-of-explorers-and.html?m=1.
Magicart87. “Society of Explorers and Adventurers.” WDWMAGIC, 24 July 2017, forums.wdwmagic.com/threads/society-of-explorers-and-adventurers.929599/.
“OPINION: THE SOCIETY OF EXPLORERS & ADVENTURERS!” Dizzoriented, dizzoriented.myportfolio.com/opinion-the-society-of-explorers-adventurers.
“The S.E.A- Disney's Secret Society: Disney Amino.” Disney | Aminoapps.com, AminoApps, 5 Jan. 2019, aminoapps.com/c/disney/page/blog/the-s-e-a-disneys-secret-society/WJ8B_r8lTXuknekQbaJQVE4oM15QMpYZ7mK.