Covered Hopper, 3-Bay, H30

History: Until the 1930s, bulk-loaded material was generally carried in the ubiquitous 40 foot boxcar. The NYC innovated by adding covers to some of their fleet of 33 foot twin bay hoppers. In 1931, the Pennsy followed suit by introducing their own converted 2-bay coal hoppers. In March 1935, the PRR introduced their first from-scratch covered hopper, the H30. The first run consisted of 100 railcars.

PRR's H30 hopper had cast bolsters. The H30a version, however, had welded bolsters, except for some low-numbered H30a's which also had cast bolsters (probably parts left over from building the H30's). The 1951-built cars had a 5-ton greater capacity than the earlier cars, as well as slightly different roof rivet positions and hatch details. During the '60's, the capacity of the remaining cars was increased to 77tons from 70, probably by changing trucks.

Railroad/Company: The Pennsylvania Railroad (reporting mark PRR) was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy," the PRR was headquartered in Philadelphia, Pennsylvania.

The PRR was the largest railroad by traffic and revenue in the U.S. for the first half of the twentieth century. Over the years, it acquired, merged with or owned part of at least 800 other rail lines and companies. At the end of 1925, it operated 10,515 miles of rail line; in the 1920s, it carried nearly three times the traffic as other railroads of comparable length, such as the Union Pacific or Atchison, Topeka & Santa Fe railroads. Its only formidable rival was the New York Central (NYC), which carried around three-quarters of PRR's ton-miles.

At one time, the PRR was the largest publicly traded corporation in the world, with a budget larger than that of the U.S. government and a workforce of about 250,000 people. The corporation still holds the record for the longest continuous dividend history: it paid out annual dividends to shareholders for more than 100 years in a row.

In 1968, PRR merged with rival NYC to form the Penn Central Transportation Company, which filed for bankruptcy within two years. The viable parts were transferred in 1976 to Conrail, which was itself broken up in 1999, with 58 percent of the system going to the Norfolk Southern Railway (NS), including nearly all of the former PRR. Amtrak received the electrified segment east of Harrisburg.