User talk:121.45.14.196

July 2011
Welcome to Wikipedia. Although everyone is welcome to contribute to Wikipedia, at least one of your recent edits, such as the edit you made to History of coal mining has been reverted, as it appears to be unconstructive. Use the sandbox for testing; if you believe the edit was constructive, ensure that you provide an informative edit summary. You may also wish to read the introduction to editing. Thank you.  Tide  rolls  01:02, 28 July 2011 (UTC)