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MINES, MINING, AND THE ENVIRONMENT







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

In 2018, Dr. Kevin Morin of MDAG marks his 40th anniversary of conducting in-field environmental studies at full-scale minesites, beginning with acidic, near-neutral, and alkaline drainage in 1978. This led to (1) his M.Sc. thesis in 1979, (2) his first co-authored journal publication in 1980, (3) later studies of hundreds more proposed, operating, and closed minesites, and (4) dozens more publications. He also marks his 45th anniversary of operating and programming computers, beginning with a Univac mainframe. This includes the 1970's punch-card version of the USGS aqueous-speciation and mineral-solubility code called WATEQF.

 

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Case Study #53, Propagation-of-Uncertainty in Net Potential Ratios for Predictions of Acid-Rock Drainage, can now be downloaded. (How "safe" is a NPR criterion of 2.0 in the face of common levels of uncertainty?)

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Case Study #52, A Case Study Applying First-Passage Percolation Theory and Reservoir Modelling to Full-Scale Waste-Rock Drainage after a One-Day Dynamic Storm, can now be downloaded. (How complicated can it be to model full-scale waste-rock drainage hour by hour for a few days? You might be surprised!)

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The free 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 full-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, 49, and 52 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 (ISBN 978-0-9952149-0-3). 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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