Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Gustave Eiffel:

"

Gustave Eiffel's career was a result of the Industrial Revolution. For a variety of economic and political reasons, this had been slow to make an impact in France,[1] and Eiffel had the good fortune to be working at a time of rapid industrial development in France. Eiffel's importance as an engineer was twofold. Firstly he was ready to adopt innovative techniques first used by others, such as his use of compressed-air caissons and hollow cast-iron piers, and secondly he was a pioneer in his insistence on basing all engineering decisions on thorough calculation of the forces involved, combining this analytical approach with an insistence on a high standard of accuracy in drawing and manufacture.[citation needed]