According to Wikipedia, a lagniappe is a small gift given to a customer by a merchant at the time of a purchase (such as a 13th donut when buying a dozen), or more broadly, “something given or obtained gratuitously or by way of good measure.” The word is chiefly used in the Gulf Coast of the United States, especially Louisiana.
Here we offer some, not necessarily technical information which might be interesting for you
Diversa – Mining and Mine Drainage Related
- The meaning of “Glückauf”
- Holy Barbara – Patron Saint of the Miners
- Geochemistry (mirror site from William M. White)
- GARD Guide (from Global Alliance and INAP – International Network of Acid Prevention)
- Dictionary of Applied Geology (TU Bergakademie Freiberg)