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of the data by adding more monitors which could help and
more data to be analyzed and comprehended which may
not be needed. These types of sensors were purchased as
off-the-shelf units which were designed as pollution moni-
tors and were not specifically built for use in the more rug-
ged mining environment. There could be problems with
sensor drift due to vibrations, high dust levels, wear and
tear, or other types of reliability issues when using these
sensors outside their intended environments. The mine
industrial hygienist brought up the idea of using the sensors
as a mobile hot spot identification tool, wherein the moni-
tors would have a default location they are normally in but
could be removed and easily moved to other locations. The
mobility of that type of system would allow the on-site
industrial hygienist to set up all sensors near a site of future
dust mitigation work to collect baseline data, then repairs
or modifications are made, and the sensors continue to col-
lect post-mitigation data, and verify how effective those
changes were at actually reducing the dust levels. Then, the
monitors could be put back in the long-term locations or in
another location. The last of the possible uses for a system
like this is to use the baseline data collected as part of a
predictive model that can use the previous dust data gener-
ated to predict/forecast future conditions which can help
determine specific times and locations that are predicted to
be hazardous.
A major takeaway from this case study is that through
continuous monitoring over extended periods, LCDMs
allow for the establishment of baseline respirable hazard
levels. This baseline serves as a reference point, offering
insights into typical dust levels during routine operations.
Comparing subsequent data to the baseline enables the iden-
tification of abnormal trends or hazardous deviations that
may require further investigation or remediation. Along the
same vein, LCDMs excel in tracking dust levels over time,
making it possible to monitor changes on a seasonal basis.
Different weather conditions, temperature variations, and
operational changes can impact dust concentrations. With
the data generated from LCDMs, researchers and profes-
sionals can observe these fluctuations at a higher resolu-
tion and better understand the dynamics influencing the
hazard levels at their workplace. Furthermore, LCDMs can
play a crucial role in monitoring the effectiveness of miti-
gation interventions. When changes are made to ventila-
tion systems, work processes, or other factors affecting dust
levels, LCDMs can detect if these interventions have the
desired impact. This ability to assess intervention effective-
ness in real-time facilitates evidence-based decision-making
and continuous improvement. By leveraging the data from
multiple monitors, establishing baselines, and tracking
changes over time, researchers and industry professionals
gain valuable insights into exposure patterns and the effi-
cacy of interventions. This data-driven approach fosters a
proactive and informed strategy toward maintaining safer
occupational environments and minimizing the risks asso-
ciated with respirable dust exposure.
LCDMs offer an affordable and accessible means
to continuously measure and track dust levels, enabling
employers and workers to identify and therefore mitigate
potential health hazards. By providing real-time data on
airborne particulate matter, these monitors enhance work-
place safety measures, allowing for timely interventions to
reduce exposure and prevent occupational respiratory dis-
eases. This technology empowers industries to prioritize
employee well-being and create healthier work environ-
ments through informed decision-making based on accu-
rate and up-to-date data. Collaboration between researchers
and industry professionals is essential as it bridges the gap
between theoretical advancements and real-world applica-
tions. By combining the expertise of researchers who delve
into cutting-edge concepts with the practical insights of
industry professionals who understand market needs, inno-
vation is accelerated and refined. This type of synergy not
only drives the development of the technologies and solu-
tions investigated, but also ensures their viability, scalabil-
ity, and successful integration into the market.
LIMITATIONS
While this study has provided valuable insights into the
use of LCDMs several limitations should be acknowledged.
First, the data presented in this study was generated from
a single mine site and does not account for differences in
geology, mining processes, or site infrastructure at other
locations which could lead to different results. Second,
the LCDMs used in the study have been adapted to a new
application which is outside what they were originally
designed for, and further validation is needed on the long-
term impacts of operating in the harsh conditions of a min-
ing operation. Third, the study does not provide a direct
comparison with traditional monitoring methods over time
to validate the accuracy and reliability of the LCDM data.
Forth, the lack of correlation with production data limits
the understanding of site-specific operational factors influ-
encing dust levels.
DISCLAIMER
The findings and conclusions in this paper are those of the
authors and do not necessarily represent the official posi-
tion of the National Institute for Occupational Safety and
Health, or the Centers for Disease Control and Prevention.
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