<?xml version="1.0" encoding="UTF-8"?>
<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" dtd-version="1.4" article-type="research-article">
  <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 crown with kinematic self-sharpening of blades</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>© 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 xlink:href="http://creativecommons.org/licenses/by/4.0">
          <license-p>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 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 blunting of rock-destroying tools.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back>
    <ref-list/>
  </back>
</article>
