<mets:mets xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" OBJID="eprint_43117" LABEL="Eprints Item" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mets="http://www.loc.gov/METS/"><mets:metsHdr CREATEDATE="2026-05-27T21:02:26Z"><mets:agent TYPE="ORGANIZATION" ROLE="CUSTODIAN"><mets:name>Repository Universitas Negeri Padang</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_43117_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>Evaluasi Teknis Geometri Peledakan terhadap Fragmentasi Batu Gamping di PT. Indocement Tunggal Prakarsa Tbk Desa&#13;
Palimanan Barat, Kecamatan Gempol, Kabupaten Cirebon, Jawa Bara</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Putri</mods:namePart><mods:namePart type="family">Pasaribu</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>PT. Indocement Tunggal Prakarsa Tbk is a producer&#13;
engaged in limestone mining, which is located in the village of West&#13;
Palimanan, Gempol District, Cirebon Regency, West Java. The&#13;
mining method used by PT. Indocement Tunggal Prakarsa Tbk is an&#13;
open pit mining system, using the Quarry mining method. From the&#13;
results of the author's observations at PT. Indocement Tunggal&#13;
Prakarsa Tbk saw a lot of fragmentation resulting from blasting&#13;
which resulted in boulder. The size of the boulder based on company&#13;
standards is 50 cm with the percentage of rock fragmentation&#13;
resulting from blasting 50 cm at PT. Indocement Tunggal Prakarsa&#13;
Tbk is still relatively high at around ± 30%, while the fragmentation&#13;
expected by PT. Indocement Tunggal Prakarsa Tbk &lt; 50 cm with a&#13;
blast yield of 80%. This study aims to design the optimum blasting&#13;
geometry to reduce the percentage of boulder so that the jaw crusher&#13;
specifications are met and do not increase the cost of renting the&#13;
breaker unit again. The research method is carried out by providing&#13;
the results of the analysis of the Kuz-Ram method. Then one of the&#13;
proposed geometries is chosen which is better while the proposed&#13;
geometry is given, namely Burden 2 m, Spacing 2.5 m, Stemming&#13;
2.2 m, Subdrilling 0.19 m, Level height 5,8 m, Depth of the blast&#13;
hole 6.68 m, Powder column 4.4 m, Powder factor 0.59, Kuzram&#13;
Fragmentation 20 %.</mods:abstract><mods:classification authority="lcc">T Technology (General)</mods:classification><mods:classification authority="lcc">TN Mining engineering. Metallurgy</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">2022-08</mods:dateIssued></mods:originInfo><mods:originInfo><mods:publisher>Universitas Negeri padang;TEKNIK PERTAMBANGAN FT UNP</mods:publisher></mods:originInfo><mods:genre>Thesis</mods:genre></mets:xmlData></mets:mdWrap></mets:dmdSec><mets:amdSec ID="TMD_eprint_43117"><mets:rightsMD ID="rights_eprint_43117_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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    </mods:useAndReproduction></mets:xmlData></mets:mdWrap></mets:rightsMD></mets:amdSec><mets:fileSec><mets:fileGrp USE="reference"><mets:file OWNERID="https://repository.unp.ac.id/id/eprint/43117/1/final_B1_11_PUTRI_PASARIBU_16137075_4461_2022.pdf" ID="eprint_43117_86301_1" SIZE="827018" MIMETYPE="application/pdf"><mets:FLocat LOCTYPE="URL" xlink:href="https://repository.unp.ac.id/id/eprint/43117/1/final_B1_11_PUTRI_PASARIBU_16137075_4461_2022.pdf" xlink:type="simple"></mets:FLocat></mets:file></mets:fileGrp></mets:fileSec><mets:structMap><mets:div ADMID="TMD_eprint_43117" DMDID="DMD_eprint_43117_mods"><mets:fptr FILEID="eprint_43117_document_86301_1"></mets:fptr></mets:div></mets:structMap></mets:mets>