Blasting for service tunnel penetration of Kammon railway tunnel.jpg

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Summary

Description	日本語: 前田米蔵鉄道大臣が、東京の鉄道省大臣室から関門トンネル試掘坑道の貫通発破の信号を送る English: MAEDA Yonezo, the minister of railways of Japan at that time, indicates break-through blasting of service bore of Kammon railway tunnel from his office at ministry of railways, Tokyo, Japan.
Date	19 April 1939
Source	土木建築工事画報1939年5月号「関門海底鉄道の試掘坑貫通」
Author	Ministry of Railways, Japan / 鉄道省

	This photograph is in the public domain in Japan because its copyright has expired according to Article 23 of the 1899 Copyright Act of Japan (English translation) and Article 2 of Supplemental Provisions of Copyright Act of 1970. This is when the photograph meets one of the following conditions: It was published before 1 January 1957. It was photographed before 1 January 1947. It is also in the public domain in the United States because its copyright in Japan expired by 1970 and was not restored by the Uruguay Round Agreements Act.
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