Groff Engineering Mining Blog
Final Mining Disclosure Rule Released by the U.S. Securities and Exchange Commission
Yesterday the U.S. Securities and Exchange Commission (SEC) released its long-awaited final rule on Modernization of Property Disclosures for Mining Registrants. The fact sheet and link to the full rule may be found here. The original proposed rule was released in...
Business is Thriving in A Small Kentucky Town
Over the last few decades, manufacturing has been shifting from densely populated regions of the country to more rural areas. A recent surge in manufacturing investments have benefited some smaller cities and towns, where land is inexpensive, energy often...
Reserve Estimates for Dredge Operations
Reserve Estimates for Dredge Pits We recently completed a mine plan for a sand deposit intended for mining by suction-cutter dredge. Laying out a mine plan for a dredge operation is a straight forward task, but estimating reserves is a bit more complex. In fact,...
Solution Salt Mining Reserves Estimates
I recently spoke at the 2018 Solution Mining Research Institute (SMRI) Spring Conference, held in Salt Lake City, UT. The purpose was to present a paper that Dr. Joel Warneke, of Cavern Solutions, and I have been working together on for some time. The paper discussed...
Current Trends in Mining Finance
I was recently honored to speak at the 6th Annual Current Trends in Mining Finance (CTMF) Conference, hosted by the New York Section of the Society for Mining, Metallurgy, and Exploration, Inc. (SME). As a panel speaker with three peers I...
What Is Underground Mining?
Underground mining is a distinct segment of the mining sector. Underground mining is generally used to extract minerals that are too far underground for surface mining to be economical. There are many different underground mining methods that can be...
Drone-based Photogrammetry: Not Easy
Over a year ago, I purchased a drone and added stereo photogrammetric surveys to the services my company can provide. Drones and photogrammetric surveys have earned favor and respect in the mining and quarry industries, and just as engineering surveys are a standard...
Part IV: Developments in Minerals Reporting & Valuations
In Part I of my series, I discussed the proposed SEC rule that was released for public comment last year around this time. The rule was widely regarded as onerous, and significant personal liability was placed upon those responsible for reporting mineral...
Part III: Developments in Minerals Reporting & Valuations
On June 16, the U.S. Securities and Exchange Commission (SEC) proposed a new rule that impacts property disclosures for mining registrants. The comment period for the proposed rule is set to expire on September 26th. As proposed, mining registrants will...
Part II: Developments in Minerals Reporting & Valuations
For those following the recent SEC proposed rule for property disclosures from mining registrants, the deadline to submit comments has been extended 30-days, to September 26, 2016. A number of insightful comments have already been submitted from the likes...