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<article xmlns:xlink="http://www.w3.org/1999/xlink">
  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>H. Rodriguez); ibeth.chiluiza@gmail.com
(I. Chiluiza); coordinadorcomercioexterior@uteg.edu.ec (C. Rivas)</journal-title>
      </journal-title-group>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Underground drones as a support line for mining companies in Ecuador</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Marcelo León</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Homero Rodriguez</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Ibeth Chiluiza</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Claudia Rivas</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Universidad Laica Eloy Alfaro de Manabi</institution>
          ,
          <addr-line>Manabi</addr-line>
          ,
          <country country="EC">Ecuador</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Universidad Tecnológica Empresarial de Guayaquil</institution>
          ,
          <addr-line>Guayaquil</addr-line>
          ,
          <country country="EC">Ecuador</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2021</year>
      </pub-date>
      <volume>000</volume>
      <fpage>0</fpage>
      <lpage>0001</lpage>
      <abstract>
        <p>We currently live in a world shaped by technology and its constant changes with hardware and software that adapt to specific users that help improve processes, why unmanned aircraft were created, which today is modern technology. applications in the development that for its range of compatibility makes feasible the support with other systems. This is how in the area of work inside information. This article focuses on putting the manifest on the usefulness of drone technology in the mining area. In this same sense, this field includes information on the operation and use of drones in this field.</p>
      </abstract>
      <kwd-group>
        <kwd>eol&gt;Drones in mining</kwd>
        <kwd>Technology</kwd>
        <kwd>Aerial devices</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>
        Currently drones are a modern technology, and there are many companies that ofer aerial
services by drone, with one of the main features being the audiovisuals that work with video
cameras. This technological advance makes its size, availability and low risk for people become
an option to reach places of dificult access, at a low cost which gives an advantage to mining
companies [
        <xref ref-type="bibr" rid="ref1">1</xref>
        ].
      </p>
      <p>
        Drones have multiple functions in which they are based on diagnosing captures that they
collect through coordinates that serve to perform locations, reserve calculations, among other
functions [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ]. Drones are a kind of technology with very peculiar features, where
orthophotographs and topography models are necessary for geological processes and the development
of scientific work are obtained [
        <xref ref-type="bibr" rid="ref3">3</xref>
        ]. In fact, there are constant changes as technology advances,
there is greater precision in this type of aerial devices with sensors with greater information
gathering capacity. A particular feature of drones is that they use a very environmentally
friendly technology as it does not produce CO2 and provides safety in field work [
        <xref ref-type="bibr" rid="ref4">4</xref>
        ].
      </p>
      <p>
        There are very useful applications that serve us with the help of drones, but also some people
do not understand the purpose for which this technology was created. Thus, the first indications
appear in 1849 when two hundred hot air balloons were placed in an attack of the Austrian
troops to the city of Venice [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ], after some time it was used during World War I, where the
military used it for espionage purposes [
        <xref ref-type="bibr" rid="ref5">5</xref>
        ].
      </p>
      <p>This article aims to analyze how aerial devices can help us in everyday life, giving reason to
the potential they bring to the field of mining, making feasible the use of this technology, so
this article will detail basic concepts that specifically indicate the features and kinds of drones
that exist, as well as how these devices help us to solve and optimize processes required in very
common areas such as civil engineering derived from mining.</p>
    </sec>
    <sec id="sec-2">
      <title>2. Background</title>
      <p>
        The technological advancement of drones benefited the mining industry and positively
transformed operations by providing real-time data. Drones allow the identification and mitigation
of mining hazards as they emerge, rapid collection of data in risky locations and the ability
to share accurate maps and models immediately with stakeholders [
        <xref ref-type="bibr" rid="ref6">6</xref>
        ]. Between the main
advantages of using drones in mining operations there are: 1) drones can do a quick inspection
of an area, either in an emergency situation or hazard identification and 2) the inspection and
unblocking of blocked box-holes and ore-passes can be done using drones [
        <xref ref-type="bibr" rid="ref7">7</xref>
        ]. Lee and Choi [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ]
categorized the applications of drones in the mining industry, including surface, underground,
and abandoned mines.
      </p>
      <p>
        A new concept of mining 4.0 has came up and it includes artificial intelligence, internet
of things, cloud analytics, and cognitive computing. Usage of drones in the mining industry
has peaked at a fast rate in surface and underground mines due to their cheaper and more
eficient data collection abilities compared to the traditional techniques [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ]. Jackisch et al. [
        <xref ref-type="bibr" rid="ref10">10</xref>
        ]
demonstrated that unmanned aerial systems (UAS) are very useful to monitor areas afected
by acid mine drainage (AMD). They investigated in the Sokolov lignite district of the Czech
Republic which was a post-mining landscape. Through four field and flight campaigns that
were conducted from April to September 2016, the group identified specific iron absorption
bands in the UAS-HSI data. These features were confirmed by ground-truth spectroscopy. The
distribution of in situ pH data validates the UAS-based mineral classification results. Evaluation
of the applied methods demonstrated that drone surveying is a fast, non-invasive, inexpensive
technique for multi-temporal environmental monitoring of post-mining landscapes.
      </p>
      <p>
        In open-pit mines, optimization of slope angle has an important role in production cost
reduction, mine eficiency, and recycling resources (DJI-The World Leader in Camera Drones,
2021). Xiang et al. [
        <xref ref-type="bibr" rid="ref11">11</xref>
        ] used integration of terrestrial laser scanning and drone photogrammetry
to investigate slope zones by monitoring point displacement and 3D mapping of open-pit slope
zones. They also did monitoring for mine inventory and changes in mine area.
      </p>
    </sec>
    <sec id="sec-3">
      <title>3. Drones</title>
      <p>
        Drones or Remotely Piloted Aircraft (RPAs) are unmanned aerial vehicles that allow the
collection of a large amount of data with very low cost of money and time [
        <xref ref-type="bibr" rid="ref12">12</xref>
        ]. A drone is referred to
as an object in terms of aerial aviation capable of being controlled by remote means, where one
of the main features is the operation of image capture, that is performed by means of a GPS
system. As technology advances, at the same time their devices evolve, which contain this type
of technological functions, this includes drones that came to the world for the public to look
from a diferent perspective the way to control applications that are contained within a device
that denotes high autonomy capabilities [
        <xref ref-type="bibr" rid="ref2">2</xref>
        ].
      </p>
      <p>Drones focus its work in diferent areas, such as the educational, industrial and legislative
ifeld, and mainly we focus on the specific field of this article that it is the mining area. From all
these areas, drones allow to expand its branch of functionality so that it can be useful and be an
important device (see Figure 1).</p>
      <sec id="sec-3-1">
        <title>3.1. Drone types</title>
        <sec id="sec-3-1-1">
          <title>3.1.1. Rotary Wing</title>
          <p>
            Depending on the defined mission, drones are generally classified based upon their
configurations. Drones can be grouped into nine categories, such as fixed-wing, flapping wing,
rotary-wing, tilt-rotor, ducted fan, helicopter, ornithopter, and unconventional types [
            <xref ref-type="bibr" rid="ref13">13</xref>
            ].
This type of drones have the feature of being less aerodynamic, allowing to reach lower speeds,
this includes that it can have restrictions in surfaces of reduced area (see Figure 4).
          </p>
          <p>
            One of the main features is the autonomy of flight, which is inferior to the previous ones,
with the only diference that this type of drone is maneuverability, being much greater in small
spaces, as well as spatial, giving it an utility in complex areas where there is vertical work. The
camera’s controlled through a gimbal support that allows its rotation, facilitating the taking of
images, thanks to the combination with the rotation of the aircraft on a fixed point [
            <xref ref-type="bibr" rid="ref12">12</xref>
            ].
          </p>
        </sec>
        <sec id="sec-3-1-2">
          <title>3.1.2. Mixed wing</title>
          <p>Mixed-wing aircraft are larger and present the benefits and limitations of a system that combines
ifxed wing and rotors.</p>
          <p>Drones have multiple capabilities to obtain physical conditions due to their weight and size,
and according to this it is possible to implement the types of sensors according to their load (see</p>
        </sec>
      </sec>
    </sec>
    <sec id="sec-4">
      <title>4. Operations with drones</title>
      <sec id="sec-4-1">
        <title>4.1. Types of permitted flights</title>
        <sec id="sec-4-1-1">
          <title>4.1.1. Recreational flights</title>
          <p>This type of flight allows to have a remote control exclusively destined to these flights, since it
allows to perform maneuvers that propel some type of specific skill.</p>
        </sec>
        <sec id="sec-4-1-2">
          <title>4.1.2. Photographic flights</title>
          <p>This type of drone allows to navigate in order to provide images collected through various
points captured by the integrated camera.</p>
        </sec>
      </sec>
      <sec id="sec-4-2">
        <title>4.2. Way of piloting</title>
        <p>In order to be able to maneuver unmanned vehicles, such as drones, some relevant aspects or
points should be considered according to the Colombia web portal:
• Having a course in Civil Aeronautics.
• The pilot cannot operate two simultaneous flights.</p>
        <p>• he pilot must not be in a state of drunkenness.</p>
      </sec>
      <sec id="sec-4-3">
        <title>4.3. Factors of drones</title>
        <p>The use of drones is common in several countries, since their commercial production is very
high, and that is why there are discussions in which the aspects or factors the governments are
mainly focused, such as privacy and protection of information and security [16].</p>
        <p>Privacy and protection of information. Here the ethics of the professionals involved in the
use of these devices, since information is collected according to the interest of the authorities,
and these in turn, are at risk of being manipulated [17].</p>
        <p>Security. Here intervenes the integration of forms of protection to the RPAS device, so that it
avoids having any accident in the airspace while it is in operation [17, 18].</p>
      </sec>
      <sec id="sec-4-4">
        <title>4.4. Aspects of drones in technology</title>
        <p>Drones undoubtedly contain advanced technology, which are abstracted by kinds of components
needed for the respective operation of the RPAS, such components contain timely information
that requires practical aspects such as:
• Detection and control systems. - Drones today contain sensors that detect objects around
them to avoid collisions. These devices are according to the technology that has
implemented, and according to it, varies the price of trade.
• Communication systems. - It is essential that the RPAS contain a communication system
through radiofrequency that scans and broadcasts information through satellites, where
they transmit the communication in urban areas.</p>
      </sec>
    </sec>
    <sec id="sec-5">
      <title>5. General application of drones</title>
      <p>rones as such are versatile in terms of the installations that are made in the predefined
attachments in some devices, among which cameras, microphones and sensors stand out [17].</p>
      <p>Some of these unmanned vehicles are fundamental for some areas such as:
• Agriculture: in this field it is useful to collect information about the crops grown.
• Audiovisual promotion: it is characterized by capturing aerial images.
• Security: in the field of surveillance in some companies.
• Education: it is used for topographic analysis.</p>
      <p>On the other hand, there are several investigations that highlight the great usefulness of
these devices as evidenced by a work done with drones for photogrammetric and 3D modeling
application, in a gray granite mine with which geological and topographic cartographic plans
were elaborated [19]. In the same way the drones have been used as a tool for detection and
alert of possible illegal mining areas in Colombia, through its cameras and a pattern recognition
algorithm [20, 21].</p>
    </sec>
    <sec id="sec-6">
      <title>6. Discussion</title>
      <sec id="sec-6-1">
        <title>6.1. Current Legal Regulations for the use of drones in Ecuador</title>
        <p>According to the provisions of the Civil Aviation Law in article 6, numeral 3, paragraph (a), the
following regulations are mentioned:</p>
        <p>"Dictate, reform, repeal technical regulations, orders, internal regulations and complementary
provisions of civil aviation, in accordance with this Law, the Aeronautical Code,the Convention
on International Civil Aviation and those necessary for flight safety and the protection of air
transport safety".</p>
        <p>These measures are directed to the Director General of Civil Aviation (DGAC), since it has
the function of competent authority, it carries a responsibility to issue regulations according to
the safeguarding of the population in general.</p>
      </sec>
      <sec id="sec-6-2">
        <title>6.2. Application of drones in the mining area</title>
        <p>The revolution that currently exists within a technological field is completely abysmal, allowing
the use of technology for diferent use of its applications and adaptation to the mining sector,
granting greater security and sustainability to workers when making studies of new mining
reserves and raw material supply.</p>
        <p>Within one of its main applications of unmanned drones in the mining sector, is to replace the
man to safeguard his life within the mining activities, allowing in turn to have an automation,
to carry out operations quickly without so much human interaction.</p>
        <p>In addition, with the implementation of this technology will allow to have more accurate
data such as: recognition of the mine, operation planning and terrain stability, giving usability
to the features that the drone has due to its sensors that will detect the characteristics of
the environment, and mediating algorithms in a systematized way for image processing [22],
obtaining information.</p>
        <p>Consuming all this resource that they currently provide us, the issue of applications in the
mining field would be transformed to a digital mining, through reliable communications, remote
control in operations and able to manage diferent types of services at the same time.</p>
        <p>
          With all this, and once the specific needs of mining have been studied, the potential
applications of drones are [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ]:
• Prospecting: It is performed when cameras integrated internally in a drone intervene
in prospecting work in areas with insuficient amount of space, making shots with a
formidable resolution [
          <xref ref-type="bibr" rid="ref14">14</xref>
          ].
• Topography: It is performed when a geological mapping can be captured through
an analysis of parameters where the size, grid spacing, pattern density, among other
characteristics are captured [
          <xref ref-type="bibr" rid="ref14">14</xref>
          ].
• Technical inspection: It is performed with the visualization of pathologies or deficits
with access to the components of the drone device [23].
• Remote sensing: their multispectral sensors allow them to recognize absorption
properties of soil, rocks and vegetation. This information is very useful for geologists [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ].
• Aerial magnetometry: this task the drone can detect magnetic field disturbances thanks
to magnetizable materials, such as magnetite, found near iron deposits [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ].
• Airborne gravimetry: this method measures pressure changes of gravity values and
which are caused by the density of earth materials [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ].
• Electromagnetism:this method generates a primary electromagnetic field that induces
the action zone. If the results are positive right away, a good conductivity is produced
and will be recognized [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ].
• Airborne radiometer: use is made of Alpha, Beta and Gamma rays found in the decay
of radioactive elements such as Uranium, Thorium and Potassium [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ].
• Photogrammetry: consists of superimposing aerial images and from the diferences of
these images the relative X, Y, and Z coordinates between points are determined [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ] (See
Figure 5).
        </p>
        <p>
          In this way, it can be established that the use of technology is in full development, and it is
necessary to acquire these resources for future applications that will come to be made with
unmanned vehicles within the mining field, allowing to obtain better accuracy, eficiency and
environmental sustainability [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ].
        </p>
      </sec>
    </sec>
    <sec id="sec-7">
      <title>7. Conclusions</title>
      <p>Through this project, it was detailed and analyzed what a drone is, as well as its features, kinds
and how it helps in the field of civil engineering and in the mining area, with its diferent
applications. The help of these devices allows us to perform versatile works where it is obtained
to simplify the classic methods of collecting information, be this to capture, analyze and process
data that was obtained.</p>
      <p>Having said the above, it is concluded that this type of technology is very useful in the fields
of all areas that may exist. Its purpose is to obtain and collect accurate, eficient and sustainable
information.
[15] S. Planning, D. LLC., 40 uses of drones. practical applications for unmanned aerial vehicles,
aviationplanning.design.blog/unmanned-aircraft-systems/, ????
[16] O. A. Fonseca-Herrera, A. E. Rojas, H. Florez, Model of an information security management
system based on ntc-iso/iec 27001 standard, IAENG International Journal of Computer
Science 48 (2021).
[17] M. Ocampo, C. Santa Catarina, Uso de drones: retos y oportunidades, 2018.
[18] L. Wanumen, J. Moreno, H. Florez, Mobile based approach for accident reporting, in:</p>
      <p>International Conference on Technology Trends, Springer, 2018, pp. 302–311.
[19] S. Guerrero, M. Faraone, R. Carrión, Aplicación de fotogrametría y modelación 3d en
geología y minería; el granito de cufré., Revista Investigaciones DINAMIGE-MIEM (2018).
[20] N. Buitrago Castaño, et al., Sistema de detección y alerta de posibles zonas de minería
ilegal utilizando drones y aplicaciones M2M, Thesis, Uniandes, 2018.
[21] C. Yinka-Banjo, O. Daniel, S. Misra, O. Jonathan, H. Florez, Comparative analysis of three
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[23] R. del Barrio Tajadura, Uso de drones en la inspección para la rehabilitación del patrimonio:
iglesia de la Merced de Burgos, Ph.D. thesis, Universidad de Burgos, 2017.</p>
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