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2. Conservation and restoration of lighthouses - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Iron was a popular material used in lighthouse construction. Multiple types of iron were used including: cast iron, wrought iron, steel, galvanized iron, galvanized steel, and stainless steel. Cast iron was the most popular material because it resists corrosion and can be cast into a multitude of shapes.

3. Harbor of Refuge Light - Wikipedia

   en.wikipedia.org/wiki/Harbor_of_Refuge_Light

   The Corps and the Foundation estimate that at least $2.7 million is needed to stabilize the 100-year-old structure. Meanwhile, the Foundation continues to preserve the lighthouse itself and, in 2008 procured a new stainless steel door system for the main entryway.

4. Carbide lamp - Wikipedia

   en.wikipedia.org/wiki/Carbide_lamp

   This, in turn, controls the flow rate of the gas and the size of the flame at the burner, and thus the amount of light it produces. This type of lamp generally has a reflector behind the flame to help project the light forward. An acetylene gas powered lamp produces a bright, broad light.

5. United States Lighthouse Society - Wikipedia

   en.wikipedia.org/wiki/United_States_Lighthouse...

   The United States Lighthouse Society (USLHS) is a non-profit organization dedicated to aiding in the restoration of American lighthouses and educating the public about their history. With four chapters, and more than a dozen affiliates, it is one of the largest and oldest lighthouse organizations in the world.

6. History of lighthouses - Wikipedia

   en.wikipedia.org/wiki/History_of_lighthouses

   Engraving of the Cordouan lighthouse, completed in 1611. During the European Middle Ages, many Roman lighthouses fell into disuse. Some did remain functional, such as the Farum Brigantium, now known as the Tower of Hercules, in A Coruña, Spain, and others in the Mediterranean Sea, such as the Lanterna at Genoa.

7. Frying Pan Shoals Light - Wikipedia

   en.wikipedia.org/wiki/Frying_Pan_Shoals_Light

   The light tower is modeled after a steel oil drilling platform, known as a "Texas Tower", on top of four steel legs that was engineered to be used as a lighthouse housing several Coast Guard members. Each of the four 42" (1 m) legs are buried 296' deep into the soil below and were filled with cement.