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2. Crawler excavator - Wikipedia

   en.wikipedia.org/wiki/Crawler_excavator

   John Deere 135P excavator with rubber tracked treads. A crawler excavator, also known as a track-type excavator or tracked excavator, is a type of heavy construction equipment primarily used for excavation and earthmoving tasks. It is characterized by its tracked undercarriage, which provides superior mobility and traction compared to wheeled ...

3. Steam shovel - Wikipedia

   en.wikipedia.org/wiki/Steam_shovel

   Otis excavator. 1841. Grimshaw of Boulton & Watt devised the first steam-powered excavator in 1796. [1] In 1833 William Brunton patented another steam-powered excavator which he provided further details on in 1836. [2] [3] The steam shovel was invented by William Otis, who received a patent for his design in 1839. The first machines were known ...

4. Eagle Mountain Railroad - Wikipedia

   en.wikipedia.org/wiki/Eagle_Mountain_Railroad

   The track then heads east over mudflats while ascending a grade. There is a wooden trestle over Dos Palmas Wash. The track crosses over the rebuilt Coachella Canal. The canal passes under the track in a concrete siphon. The track crosses the abandoned original channel of the Coachella Canal on a three span steel bridge.

5. List of California railroads - Wikipedia

   en.wikipedia.org/wiki/List_of_California_railroads

   San Diego and Imperial Valley Railroad: San Diego Central Railroad: ATSF: 1886 1887 California Central Railway: San Diego and Cuyamaca Railway: SP: 1909 1912 San Diego and South Eastern Railway: San Diego and Cuyamaca Railway: SP: 1887 1888 San Diego, Cuyamaca and Eastern Railway: San Diego, Cuyamaca and Eastern Railway: SP: 1888 1909 San Diego ...

6. Pacific Imperial Railroad - Wikipedia

   en.wikipedia.org/wiki/Pacific_Imperial_Railroad

   The Desert Line starts at the border crossing at Division, near Campo at Milepost 59.94 (inside Tunnel #4) in eastern San Diego County, California, where it connects with the Baja California Railroad in Mexico, and stretches 70.1 miles through the Jacumba Mountains to El Centro, California, where it connects to Union Pacific Railroad at ...

7. San Diego and Imperial Valley Railroad - Wikipedia

   en.wikipedia.org/wiki/San_Diego_and_Imperial...

   The San Diego and Imperial Valley Railroad (SD&IV) (reporting mark SDIY) is a class III railroad operating freight rail service in the San Diego area, providing service to customers in the region and moving railcars between the end of BNSF Railway in downtown San Diego and the Mexico–United States border in San Ysidro.