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Metro tubing tunnel construction
Múzquiz, Mexico, January 17 -- The deep entrance of a coal mine with some miners in the Múzquiz region in the state of Coahuila in northern Mexico, about 100 kilometers from the border between Mexico and the United States.
A beautiful shot of a bridge over a canal.
Aerial view of railway bridge across Willamette River in Oregon, USA.
Kagawa, Japan - June 25, 2023: Seto Ohashi Line on The Great Seto Bridge or Seto Ohashi Bridge
Cement factory with ship loading at seaport, Venezuela
Photo taken in Suez, Egypt
Welland Canal Lock #4
I took this pic in Japan.
Múzquiz, Mexico, January 17 -- The deep entrance of a coal mine with some miners in the Múzquiz region in the state of Coahuila in northern Mexico, about 100 kilometers from the border between Mexico and the United States.
Dirty water flow from pipe. Water discharge. Ecology and environment pollution concept. Outdoors
One men standing in the military naval concrete hiding place inside Dugi otok, island. Hiding place for submarines.
Cargo Cranes in Industrial Port
Mechanical equipment in industrial plants
These mortar batteries at Fort Hancock of Sandy Hook, NJ were among the first Endicott-style built as part of New York Harbor defense against attack from sea during World War I. By the 1930's these very mortar batteries and the guns that were seated in them were removed and rendered obsolete however the tunneling system remained as a command center for all New York Harbor defenses. The command center rooms contained communications, plotting and telephone, maps, and emergency shipping and office spaces for military commanders playing an intricate role during World War II.
Historical buildings by river aire Leeds England UK
Hoek van Holland, Holland, September 25 - 1997: Historical aerial photo of the open Maeslandkering on the Nieuwe Waterweg to Rotterdam, Holland
Viewed through gap in rusty wire mesh security fence, an empty coal train exits double track railway tunnel with arch portal in stone wall facade. A small patch of mauve wildflowers is visible on the side of the railway cutting. Tunnel engineering is essential to building sustainable and efficient railway infrastructure. Vertical format.
Lucerne, canton of Lucerne, Switzerland, 3 August 1986: a characteristic small dam on the Reuss River before it flows into Lake Lucerne. The small structure is one of many that regulate the flow of water into the lake.
A canal along the Mississippi River  near St. Louis with locks to control the depth of the river to maintain year-round shipping capabilities from the northern states through to the Gulf of Mexico.
Сable ducts on a pass-through cable overpass. Outdoors industrial conduit corridor. Busbar gallery.
Aerial view of a coal mine
Tacoma, Washington, USA.  Murray Morgan Bridge. Sea port. Construction details
Cement factory, Venezuela
Sewage drainage pipe, sewage flows from the collector. Environmental pollution.
A highway under construction, including a false tunnel, as seen from above
Tunnel boring machine
Cement production machinery and equipment in industrial plants
Industrial wastewater and urban sewage flowing through round sewer pipe.
railway
Free Images: "bestof:...Looking downstream through diversion tunnel No. 2 from point near inlet portal. Tracks over which gantry crane... - NARA - 293631.tif Scope and content"
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