The site of the nation's first commercial nuclear power generation facility -- in Shippingport -- is among the 21 new state historical markers that have been approved by the Pennsylvania Historical and Museum Commission.

The new markers will be added to the nearly 2,200 such signs that already dot roads and streets across the state.

These people, places and things will be honored by new markers in Western Pennsylvania:

John M. Phillips, Pittsburgh. Mr. Phillips was the founder, board member and president of the Pennsylvania Game Commission. An engineer and industrialist, he became one of the most prominent names in conservation in the state. He also helped start the first Boy Scout troop in Pennsylvania.

Westinghouse Air Brake Co., Pittsburgh. Before the success of his electric company, George Westinghouse developed the air brake for railroads. It was an innovative engineering feat that revolutionized rail transportation, enabling trains to be longer, heavier and faster while also being safer.

Westinghouse Atom Smasher,Forest Hills. The nation's first industrial Van de Graaf nuclear generator was developed to seek out the secrets of nuclear energy as a source of practical power. The unusual pear-shaped structure has been designated an Electrical Engineering Milestone.

Shippingport Atomic Power Station, Shippingport. The first commercial nuclear facility in the nation created specifically for generating electricity. Development was part of President Eisenhower's "Atoms for Peace" plan.

Byron D. Benson, Titusville. Mr. Benson was among the founders of the Tidewater Pipe Co., which used a larger pipe and pumped oil a greater distance and to higher elevation than ever before, revolutionizing the transportation of crude oil.

John William Heisman, Titusville. Mr. Heisman was a legendary college football coach and the namesake of the coveted college football trophy. He revolutionized the sport with the center snap, the hidden-ball play and the Heisman shift and by promoting the legalization of the forward pass and other safety improvements.

Corry State Fish Hatchery, Corry. The Pennsylvania Fish & Boat Commission calls it "the pioneer PA trout hatchery." It is one of the earliest and longest continuously operating fish hatcheries in the state. It supports recreational fishing and is instrumental in restoring species to native waters.

Oil Creek Railroad, Corry. This railroad revolutionized transportation of oil from the surrounding oil region by rendering obsolete, wasteful and dangerous pond freshets and time and labor-intensive, horse-drawn wagons.