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MDAG.COM
MINES, MINING, AND THE ENVIRONMENT







MDAG.com: Since 1997, Providing Valuable Technical Information on Minesite-Drainage Chemistry and Environmental Geochemistry through the Internet

The 20th Anniversary of This Website,
the 20th Anniversary of Environmental Geochemistry of Minesite Drainage: Practical Theory and Case Studies,
and the 35th Anniversary of Morwijk Enterprises,
are Being Celebrated by Free Books, Spreadsheets, and Papers

 

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Case Study #51, A Case Study of Complex Drainage from an Acidic Waste-Rock Pile on a Marine Coast, can now be downloaded.

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Case Study #50, Explanations of Poregas CO2 Variability Relative to O2 in the Equity Silver Waste-Rock Pile, can now be downloaded.

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Case Study #49, Time-Dependent Toxicity Related to Short-Term Peaks of Contaminant Release, can now be downloaded.

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Case Study #48, The MDAG Dynamic ARD-Onset Simulator, can now be downloaded.  This simplified spreadsheet-based model simulates and visually displays the onset, growth, and migration of ARD in a vertical cross-sectional grid.  The grid contains user-specified net-acid-generating cells within a matrix of net-acid-neutralizing cells. A separate PDF document contains details, instructions, and examples for this model.

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Free for personal use, the new book entitled, "Spectral Analysis of Drainage from Highly Reactive Geologic Materials" (ISBN 978-0-9952149-1-0), is now available for download here at MDAG.com.

This book contains a novel and unconventional approach for interpreting and understanding the flows and chemistries of field-scale drainages from reactive geologic materials. Recent advances in other sciences are adapted and applied to drainage, with emphasis on emergent properties important at larger scales. As the Preface points out about this novel approach, "Now I understand better what that past work was trying to tell me."

MDAG Case Studies 43, 44, 45, 46, and 49 expand on some issues raised in the book.


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Interested in minesite-drainage chemistry, but not sure where to start? Looking for a basic introduction with dozens of colour photographs from minesites around the world?

MDAG Publishing has released a free ebook by Dr. Kevin Morin, entitled Minesite Drainage Chemistry: An Introduction. This printable ebook in PDF format can be read on many ebook readers, laptops, and desktops. This free ebook can be downloaded immediately, and contains no digital-rights management or security limitations.

Click here, and then scroll down to the link for the ebook.


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We have also published many informative papers at conferences and in journals, as well as Internet case studies and books here at MDAG.com.
 

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We steadfastly believe that the environmental effects of drainage chemistry can only be understood, predicted, and moderated by thoroughly understanding past competent work and by carefully studying existing operations and sites. Heed the old words of wisdom: "Those who ignore the past are doomed to repeat it". Is that why we hear that up to 90% of predictions of minesite-drainage chemistry are too low, leading to unexpected costs and adverse environmental effects for mining companies?  This is why we heavily emphasize real case studies with abundant data, followed by theory and modelling in subordinate roles.

 

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