Research Inquiries

For inquiries related to SD Mines Research, contact:

Research Affairs

S.D. School of Mines & Technology
501 E. St. Joseph Street
Suite 102, O'Harra Building
Rapid City, SD  57701

(605) 394-2493

Research@Mines Archive:
March, 2018

Growing Copper Deep Underground: SD Mines Plays Integral Role in Successful MAJORANA DEMONSTRATOR Experiment

Much of the experiment’s copper is processed underground to remove both natural radioactivity (such as thorium and uranium) and radioactivity generated above ground when cosmic rays strike the copper. Electroforming relies on an electroplating process that over several years forms the world’s purest copper stock. Ultrapure copper is dissolved in acid and electrolytically forms a centimeter-thick plate around a cylindrical stainless-steel mandrel. Any radioactive impurities are left behind in the acid. Here collaborator Cabot-Ann Christofferson of the South Dakota School of Mines & Technology measures the thickness of copper pulled from an electroforming bath. Credit: Sanford Underground Research Facility; photographer Adam Gomez

The collaborators working on the MAJORANA DEMONSTRATOR have published a study in the journal Physical Review Letters showing the success of the experiment housed in the Sanford Underground Research Facility (SURF). The success of the MAJORANA DEMONSTRATOR opens the door for the next phase of the experiment and sets the stage for a breakthrough in the fundamental understanding of matter in the universe. 

The experiment, led by the Department of Energy’s Oak Ridge National Laboratory, involves 129 researchers from 27 institutions and six nations. The South Dakota School of Mines & Technology was an integral part in facilitating the underground laboratory space at SURF and helped lead the effort to build the ultra-pure components needed to construct a successful experiment. 

“The goal was to demonstrate the feasibility and capability to build a larger one-ton experiment,”  says Cabot-Ann Christofferson, the Liaison and a Task Leader within the  MAJORANA Collaboration at the Sanford Underground Lab and an...

Last Edited 6/28/2018 01:05:55 PM [Comments (0)]

The Gas Cube – Turning Remote Base Waste Into Energy

The Gas Cube is a compact reactor that can turn waste into methane gas.

Cows, as many people know, have four stomachs. Cows also generate lots of methane.  So, if your goal is to describe a machine that turns food waste and cardboard into methane gas, the bovine digestive system is an analogy that makes some sense.  

“Our reactor is some ways a two-stomach cow,” says Jorge Gonzalez-Estrella, a post-doctoral research associate in the Chemical and Biological Engineering Department at Mines.

Gonzalez-Estrella is one of the researchers working on the Gas Cube project.  The semi-trailer-sized reactor is much larger than a cow, but it’s still portable. It’s one of the projects in development at Mines aimed at turning a range of remote base waste into energy. This is all thanks to a $4.8 million grant from the United States Air Force, $1.2 million of which funds the Gas Cube.  A remote Air Force Base can produce lots of waste. The Air Force seeks to save waste handling and fuel costs at mission-based remote bases. This is a challenge that the Gas Cube is designed to overcome. 

How does it work?  Back to the cow analogy. At the Gas Cube’s input, or mouth, a shredder grinds up the solid cardboard or food waste and deposits it in chamber number one. This is sort of like a cow chewing and swallowing its food. Then in that first chamber, or stomach number one, hydrolytic microorganisms break down the mix of food waste and cardboard into sugars, and fermenting microbes then break up those su...

Last Edited 4/26/2018 01:36:39 PM [Comments (0)]

Microscopy Trifecta Examines How Cells Engulf Nutrients, Viruses

As part of her doctoral research at the South Dakota School of Mines & Technology nanoscience and nanoengineering program, Amy Hor examines chemically fixed cells using correlated fluorescence and atomic force microscopy. She worked under the direction of professor Steve Smith. The collaborative research, which also involved microscopy teams from South Dakota State University and the National Institutes of Health, showed that membrane bending occurs at all stages of clathrin assembly.

Scientists have a better understanding of a mechanism that allows cells to internalize beneficial nutrients and not-so-beneficial viruses, thanks to collaboration among researchers from two South Dakota universities and the National Institutes of Health.           

South Dakota State University associate professor Adam Hoppe, South Dakota School of Mines & Technology professor Steve Smith and NIH scientists Justin Taraska and Kem Sochacki combined three unique types of microscopy to track how a protein called clathrin triggers cell membrane bending. They found that clathrin, which creates a honeycomb shaped scaffold on the cell membrane, has an unexpected amount of plasticity when pinching off small portions of the cell membrane. Their work was published in the Jan. 29, 2018, issue of Nature Communications.

Hoppe and Smith work collaboratively through the South Dakota BioSystems Networks and Translational Research (BioSNTR) center, which is funded through the South Dakota Research Innovation Center program and the National Science Foundation’s Established Program to Stimulate Competitive Research program. A greater understanding of how cells internalize material will help BioSNTR researchers working with Sioux Falls-based SAB Biotheraputics to develop new alternative treatments for influenza.

The contributions of NIH scientists Justin Taraska and Kem Sochacki were made possible through a federally fund...

Last Edited 4/26/2018 01:37:40 PM [Comments (0)]

Green Tech & Anti-Counterfeiting Efforts at Mines Aid Military

Mike Tomac, PhD student at South Dakota School of Mining & Technology, stands near a small-scale K-Span structure used to test the viability of adapting off-the-shelf solar technology to deployable structures for the Air Force at Tyndall Air Force Base, Florida. (Courtesy Photo)

Whether it’s ensuring that service men and women have hot water on deployments or preventing the distribution of dangerous counterfeit products, research developed at South Dakota of Mines & Technology - and strengthened through partnerships with the United States Air Force - is changing the future.   

In hot water

The Air Force Civil Engineer Center and SD Mines have focused efforts on bringing off-the-grid electricity and hot water to difficult deployment locations around the world. The research work is led by Ph.D. candidate Mike Tomac, Chemical and Biological Engineering professor David Dixon, Ph.D., and former Mines faculty member Butch Skillman.

Using equipment originally designed to heat residential pools, the project entails deploying kit-ready solar panels and water heating systems that could provide both 

Currently, structures that provide electricity and hot water during deployments are installed on an expeditionary electrical grid and serve as command centers, mess halls, maintenance facilities and more. The structures require fuel...

Last Edited 4/26/2018 01:39:48 PM [Comments (0)]