== Dead link ==
During several automated bot runs the following external link was found to be unavailable. Please check if the link is in fact down and fix or remove it in that case!
* http://www.ewb.neu.edu/wiki/files/Technology_notes_07_web_1.pdf ([http://web.archive.org/web/20150226081414/http://www.ewb.neu.edu:80/wiki/files/Technology_notes_07_web_1.pdf archive])
** In [[Percussion drilling]] on 2015-10-31 06:26:15, 404 Not Found
** In [[Percussion drilling]] on 2015-11-01 06:26:21, 404 Not Found
** In [[Percussion drilling]] on 2015-11-02 06:26:46, 404 Not Found
** In [[Percussion drilling]] on 2015-11-03 06:26:31, 404 Not Found
** In [[Percussion drilling]] on 2015-11-04 06:27:22, 404 Not Found
** In [[Percussion drilling]] on 2015-12-10 06:31:38, 404 Not Found
** In [[Percussion drilling]] on 2015-12-29 06:35:07, 404 Not Found
** In [[Percussion drilling]] on 2016-01-15 06:31:50, 404 Not Found
** In [[Percussion drilling]] on 2016-02-05 06:38:38, 404 Not Found
** In [[Percussion drilling]] on 2016-02-12 06:40:58, 404 Not Found
** In [[Percussion drilling]] on 2016-03-05 06:38:29, 404 Not Found
** In [[Percussion drilling]] on 2016-03-16 06:36:57, 404 Not Found
** In [[Percussion drilling]] on 2016-04-01 06:40:12, 404 Not Found
** In [[Percussion drilling]] on 2016-06-15 06:36:38, 404 Not Found
** In [[冲击钻井]] on 2016-07-15 06:32:05, 404 Not Found
The web page has been saved by the Internet Archive. Please consider linking to an appropriate archived version: [http://web.archive.org/web/20150226081414/http://www.ewb.neu.edu:80/wiki/files/Technology_notes_07_web_1.pdf].--[[User:Weblinkchecker|Weblinkchecker]] ([[User talk:Weblinkchecker|talk]]) 08:32, 15 July 2016 (CEST)
[[Category:Weblinkchecker reported broken links]]