@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix ssd:   <http://www.w3.org/ns/sparql-service-description#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
@prefix skos:  <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix qb:    <http://purl.org/linked-data/cube#> .
@prefix dgu:   <http://reference.data.gov.uk/def/reference/> .
@prefix ui:    <http://purl.org/linked-data/registry-ui#> .
@prefix dct:   <http://purl.org/dc/terms/> .
@prefix reg:   <http://purl.org/linked-data/registry#> .
@prefix api:   <http://purl.org/linked-data/api/vocab#> .
@prefix dcat:  <http://www.w3.org/ns/dcat#> .
@prefix vann:  <http://purl.org/vocab/vann/> .
@prefix prov:  <http://www.w3.org/ns/prov#> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix cc:    <http://creativecommons.org/ns#> .
@prefix void:  <http://rdfs.org/ns/void#> .
@prefix org:   <http://www.w3.org/ns/org#> .
@prefix odrs:  <http://schema.theodi.org/odrs#> .
@prefix env-ui: <http://environment.data.gov.uk/registry/structure/ui/> .
@prefix hike:  <https://data.geoscience.earth/ncl/def/hike/> .
@prefix version: <http://purl.org/linked-data/version#> .
@prefix dbo:   <http://dbpedia.org/ontology/> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ldp:   <http://www.w3.org/ns/ldp#> .
@prefix time:  <http://www.w3.org/2006/time#> .
@prefix vs:    <http://www.w3.org/2003/06/sw-vocab-status/ns#> .
@prefix dc:    <http://purl.org/dc/elements/1.1/> .

<https://data.geoscience.earth/ncl/DrillingMethod/auger>
        a                  skos:Concept ;
        dct:source         <https://en.wikipedia.org/wiki/Drilling_rig#Auger_drilling> ;
        skos:altLabel      "solid stem auger"@en , "continuous flight auger"@en , "hollow stem auger"@en ;
        skos:definition    "Auger drilling is done with a helical screw which is driven into the ground with rotation; the earth is lifted up the borehole by the blade of the screw. Auger drills may be either rotated by hand or mechanically driven. Hollow stem auger drilling is used for softer ground such as swamps where the hole will not stay open by itself for environmental drilling, geotechnical drilling, soil engineering and geochemistry reconnaissance work in exploration for mineral deposits. Solid flight augers/bucket augers are used in harder ground construction drilling. In some cases, mine shafts are dug with auger drills. Small augers can be mounted on the back of a utility truck, with large augers used for sinking piles for bridge foundations."@en ;
        skos:narrower      <https://data.geoscience.earth/ncl/DrillingMethod/handAuger> , <https://data.geoscience.earth/ncl/DrillingMethod/powerAuger> ;
        skos:notation      "1"^^xsd:ID ;
        skos:prefLabel     "auger"@en ;
        skos:topConceptOf  <https://data.geoscience.earth/ncl/DrillingMethod> .