The 9-inch mortar M1877 was a Russian 229 mm coastal, fortress and siege mortar that was used in the Russo-Japanese War and World War I.
A 9-inch coastal mortar at Suomenlinna.
A 9-inch mortar captured by the Japanese at Port Arthur.
A 9-inch mortar captured by the Japanese at Port Arthur.
A 9-inch mortar being transported.
Obukhov State Plant is a major Russian metallurgy and heavy machine-building plant in St. Petersburg, Russia.
Obukhov and Putilov
Obukhov State Plant in 1902
Floor plan of the factory in 1912