Dr. Paul Israel

That project, a fully automated mining operation and processing operation,

Tactically successful, it fails because a huge new iron deposit in the Great Lakes region of Lake Superior is discovered, the Mesabi Range.

So it fails.

He takes the technology that he'd been using for rock crushing and applies it to the production of sand for cement and investigates the cement industry thoroughly.

and designs new technology, including a much-improved rotary kiln that becomes the industry standard.

He develops an automated plant out in western New Jersey.

The original Yankee Stadium is built with Edison portal and cement.

Two other projects of the 1890s.

The phonograph became a commercially viable technology, and Edison helps to found the modern sound recording industry.

And through the 1890s and into the first three decades of the 20th century,

Edison's phonograph is a crucial part of that technology.

Now, there are competitors, such as the Victor Company.

Edison competes with his cylinder against the Victor Disc.

Eventually, Victor wins out as the shift is made to electric recording with the development of vacuum tube technology and electronics.

And then the other technology that he spent a lot of time on beginning in the 1890s through World War I

is the motion picture industry.

Edison develops the first commercial camera and viewing system.

Later, this becomes a industry that grows.

Edison is in the industry until World War I, and then he gives it up.

He's never really quite sure what the market is for motion pictures, and so his company kind of fades away in a sense.