Page 7 - MN 2020 Conference Program

10:00am 10:30am
From Development to Decommission: Unlocking the Power Void Scanning, The Importance of Safe and Efficient Lidar
of Drone Data Mapping of Potentially Hazardous Areas
Bri Ivar and Michael Scott; Propeller Aero, Denver, CO Nick Maronde; RESPEC, Lexington, KY
When it comes to mines, nothing is stand-alone. As you’re extracting, you’re The C-ALS Gyro is a cavity monitoring system that is used in a wide range of
prospecting, and while you’re extracting and prospecting, you’re working applications, where an inaccessible void exists and accurate data is required;
toward reclamation—a tangled web of ever-changing timelines. In this ses- monitor excavations, assess risk, or design solutions. The C-ALS allows for
sion, we’ll explore the power of drone data and how the benefits trickle down flexible deployments and is the only borehole-deployable laser solution on
through the entire mine matrix to eliminate guesswork at all stages from the market. Users; underground mining and exploration, reclamation, and
development to decommission. This will include a discussion on using 3D mine planning. The C-ALS gives you efficient mapping capabilities. You can
site models to build a comprehensive record of on-site happenings, and how safely, quickly, and reliably scan underground workings. The Carlson Scan
mines are using this record to gauge efficiency, estimate remaining life, and software gives you modeling, manipulation, and export capabilities. All can
blast more strategically to minimize waste and environmental impact. be done remotely, allowing you to engineer solutions based on accurate data.

10:30am ENVIRONMENTAL
GIS Based Desktop Wetland Delineation Using MN DNR
LiDAR and NAIP 1-Meter Imagery Chair: Jennifer Fleming; Barr Engineering Co., Duluth, MN
Josh Vosejpka; Barr Engineering Co., Minneapolis, MN
Barr recently performed a GIS-based desktop wetland delineation analysis at 9:30am
a project site in northern Minnesota. The process developed will help guide Getting Hygienists a Seat at the Table
future field wetland delineation efforts. Publically available data, including Grant Henderson; Nanozen Industries Inc., Vancouver, British Columbia, Canada
LiDAR, NAIP 1-Meter Color-Infrared imagery, along with several derived This is a very abbreviated abstract – In this study a cost-effective aerosol
datasets provided 11 inputs for use in classifying wetlands in the Eggers generation and testing system has been built and tested in order to conduct
and Reed (2015) classification system. A supervised classification was then a systematic investigation of particle size, type, concentration and standard
performed using training sample polygons developed from previous wetland curves for respirable and PM2.5. A large number of various mine dust sam-
delineations and aerial imagery. The resulting delineation matched well a ples were examined against the gravimetric method to determine custom
small area of previously delineated wetlands and identified additional poten- gravimetric calibration factors. This evidence-based understanding of the
tial wetland areas not identified in the National Wetland Inventory. strengths and limitations of measurement methods including real-time al-
lows hygienists to be well informed when developing sampling strategies
MINING AND EXPLORATION and analyzing data and improves their ability to build a business case for
personal, real-time aerosol monitoring.
Chair: Stephen Monson Geerts; UMD Natural Resources
Research Institute, Duluth, MN 10:00am
Planning for Climatic Uncertainty: What are the Costs for an
9:30am Extreme Precipitation Event at a Minesite?
Modern Geological Field Mapping using ArcGIS Online and David Willams, Butte, MT
Esri Survey 123 One element of Climate Change that poses particular challenges for mine-
Roger Schulz; Big Rock Exploration, Minneapolis, MN sites is the increasing likelihood of extreme precipitation events. Increases in
Field geologists have a very specific set of standard tools that have not the percentage of precipitation falling as intense precipitation has increased
changed for over a century. These tools will never change, but technology throughout the United States and is projected to increase globally as the climate
can dramatically enhance the data that is captured while in the field. Big continues to change. An extreme precipitation event at the Zortman-Landusky
Rock Exploration has supplemented time honored techniques, by digitally Mine, a bankrupt minesite in North Central Montana, jointly managed by the
mapping in the field using Esri’s Survey 123. Combining these techniques U.S. Bureau of Land Management and the Montana Department of Environ-
with traditional mapping practices, has resulted in faster data analysis mental Quality can give us some perspectives on the costs that a minesite
and interpretation for our client projects. During the session, Big Rock will could potentially incur if storm water management relies on outdated or inad-
demonstrate how their team has implemented a digital mapping workflow equate estimates of potential storm events. This presentation discusses the
and illustrate the benefits of combining traditional and modern methods. repairs performed, the relevant costs and possible mitigations that might be
used to develop more resilient and robust water management and closure op-
tions. It will also highlight ongoing climate change research, recent economic
10:00am implications and discussions that will be useful to be aware of.
Leveraging the Benefits of LTE Cost Effectively Eith
Deployment of a Hybrid LTE/Meshing Solution
Maxime Guillaumot and Ron White; 3D-P, Calgary, Alberta, Canada 10:30am
Minnesota Taconite Workers Health Study: An Overview of the
The introduction of commercial LTE in North America promises great ben- NRRI’s Environmental Study of Airborne Particulate Matter
efits, from long distance coverage to true Quality of service (QoS) and high Lawrence Zanko, Stephen Monson Geerts and George Hudak;
network security. With a pricing model based on the amount of data trans- UMD Natural Resources Research Institute, University of Minnesota
mitted, LTE can however rapidly become out of reach for those mines looking Duluth, Duluth, MN
to access all their data, all the time. In this presentation, we will discuss how
a fast roaming hybrid LTE/Mesh client can break the last barriers LTE faces in The study comprised physical, mineralogical, and chemical characterization
the market by providing complete coverage, higher throughput and peer-to- of airborne particulate matter (PM) in Mesabi Iron Range (MIR) taconite pro-
peer connectivity by better managing the amount of data travelling through cessing facilities, selected MIR communities and background locations, and
the LTE network at any one time. in age-dated lake sediment from two MIR lakes. Respirable mineral PM of a
specific size, shape, and mineralogy – referred to as elongate mineral particles
(EMPs) – were of special interest. Components of this PM characterization
included: gravimetric analysis, mineralogical identification, mineralogical con-
centration evaluations, PM morphological characterizations, and PM chemical
characterizations. The fundamental question to be addressed by this study
was, “What was in the air?” An overview of the NRRI’s findings is presented.

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