Hi and Welcome to the global user page of user TETRIS L. Yeah, that's me.

I'm male, in my mid 40s, husband and father. I work as a thermal power plant process engineer. I'm German, but I've lived and worked in many places around the world for longer and shorter periods.

My main fields of interest are:

• Energy
• Mining
• Mills

... and the history of these.

I learned the ropes of wikis as a contributor of several PC-gaming-related wikis in 2005. I'm a regular in the German Wikipedia since 2008 and on Wikimedia Commons since 2009. In other Wikipedias, including the English one, I do mostly minor edits such as adding or correcting interwiki links.

If you want to contact me, you can

• leave me a note on my talk page on the German Wikipedia, which I check most frequently. You can still write in English though!
• (replace (ä) with @),
• email me through this wiki