Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 3, Donner ...
Significance: No. 3 Blast Furnace, also known as "Jane," was blown-in in 1948. This furnace was considerably larger than either Blast Furnace No. 1 or No. 2, with a hearth diameter of 28 feet, and 18 tuyeres. ... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Pittsburgh Steel Company, Monessen Works, Blast Furnace No. 1 & No. 2,...
Significance: No. 1 and No. 2 Blast Furnaces were blown-in in 1913. The two furnaces were nearly identical in design and capacity at the time of construction and shared a common cast house, an unusual arrangem... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Donner Avenue, Monessen, Wes...
Significance: One of several large steel making complexes in the Monongahela River Valley in southwestern Pennsylvania, the Pittsburgh Steel Company's Monessen Works grew from a rod and wire mill to a fully int... More
Pittsburgh Steel Company, Monessen Works, Open Hearth Plant, Donner Av...
Significance: The open hearth steelmaking plant of the Monessen Works was built in 1908. Pittsburgh Steel installed eight 95 ton, basic open hearth furnaces in a 1,055 x 280 feet steel-frame, metal-clad buildi... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More
Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsvil...
Significance: The Hillman Barge facility is significant in the commercial and industrial development of southwestern Pennsylvania as a fabricator of shipping vessels. Beginning as a distribution facility for c... More