"Bonanza" episode
Season 1, Episode 8
#8 in Series
Air date October 31, 1959
Guest starring:
Written by Thomas Thompson
Directed by Joseph Kane
Episode Guide
Previous Episode:
The Saga of Annie O'Toole
Next Episode:
Mr. Henry Comstock
External links
The Philip Deidesheimer Story on IMDb
The Philip Deidesheimer Story on


Adam and Hoss meet Philip Diedesheimer, a Dutch immigrant who is trying to convince the silver mine owners in Virginia City that his square set mine system works. The owner of one mine is determined to see that Deidesheimer's idea is not accepted. However, when a friend of Adam gets killed in a mine collapse, the Cartwright boys set about making sure that Deidesheimer is given the chance he deserves.


The mines in Virginia City aren't safe. The depth and width of the silver veins can't be supported by the current form of timbering.

When a mine collapse occurs in the Ophir Mine, Adam works with his good friend and mine foreman, Gil Fenton, to investigate. The Ophir owner, Andrew Holloway, has also hired an engineer, Philip Diedesheimer, to look into it.

While in the mines, another collapse occurs, trapping Adam and Diedesheimer and killing Gil. The two survivors are even more determined to find a solution.

After much thought, and some arguement with Holloway, Diedesheimer comes up with the square set. It requires a lot of timbering, but has many advantages and nearly guarantees safety. But due to the additional lumber, none of the mine owners are interested and even accuse Adam of trying to find a way to make more money. But not one to sit back and accept defeat, Adam, Hoss, and Diedesheimer proceed to install the new square set in the Ophir. They test it by setting off a dynamite explosion near by. Unfortunately, all the mine owners have entered the mine to look at the new system. When their lives are saved because of the square timbering, they all agree to invest in the new system.

Cast and CharactersEdit



Wikipedia has an article related to: Philip Deidesheimer.

Did You Know?Edit



See The Philip Deidesheimer Story/videos

See alsoEdit