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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-11671</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/11671</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Без раздела</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Without section</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Drilling bit with kinematic self-sharpening of cutting edges.</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Буровая коронка с кинематическим самозатачиванием лезвий</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Talko</surname>
            <given-names>A. I.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Талько</surname>
              <given-names>А. И.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Talko</surname>
              <given-names>A. I.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"/>
          </aff>
          <aff>
            <institution xml:lang="en"/>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1973-01-01">
        <day>01</day>
        <month>01</month>
        <year>1973</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1973</year>
      </pub-date>
      <volume>65</volume>
      <issue>1</issue>
      <fpage>90</fpage>
      <lpage>92</lpage>
      <history>
        <date date-type="received" iso-8601-date="1972-07-08">
          <day>08</day>
          <month>07</month>
          <year>1972</year>
        </date>
        <date date-type="accepted" iso-8601-date="1972-09-20">
          <day>20</day>
          <month>09</month>
          <year>1972</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1973-01-01">
          <day>01</day>
          <month>01</month>
          <year>1973</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1973 А. И. Талько</copyright-statement>
        <copyright-statement xml:lang="en">© 1973 A. I. Talko</copyright-statement>
        <copyright-year>1973</copyright-year>
        <copyright-holder xml:lang="ru">А. И. Талько</copyright-holder>
        <copyright-holder xml:lang="en">A. I. Talko</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/11671">https://pmi.spmi.ru/pmi/article/view/11671</self-uri>
      <abstract xml:lang="ru">
        <p>В угольных карьерах все большее распространение получает наиболее производительный способ бурения взрывных скважин, при котором горные породы разрушаются по принципу резания. Основной недостаток этого принципа состоит в быстром затуплении породоразрушающих инструментов.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>In coal open pits, the most productive method of blast drilling, in which rocks are destroyed by the principle of cutting, is becoming more and more widespread. The main disadvantage of this principle is the rapid dulling of rock-destroying tools.</p>
      </abstract>
    </article-meta>
  </front>
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