Sommeiller_drill.jpg
Summary
A late 19th-century pneumatic rock-drilling machine, invented by Germain Sommeiller and used to drill the first large tunnels through the Alps.
Image copied from http://www.albaiges.com/ingenieros/11sXIX-m_archivos/image042.jpg
Licensing
Public domain Public domain false false |
This work is in the
public domain
in France for one of the following reasons:
Please note that moral rights still apply when the work is in the public domain. They encompass, among others, the right to the respect of the author's name, quality and work ( CPI art. L121-1 ). Attribution therefore remains mandatory.
العربية
∙
English
∙
español
∙
français
∙
日本語
∙
한국어
∙
македонски
∙
русский
∙
Tiếng Việt
∙
简体中文
∙
繁體中文
∙
+/−
|
Public domain Public domain false false |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer . This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929. |
|
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/ PDM Creative Commons Public Domain Mark 1.0 false false