Heading

{
  "id": "MLC-T-IND-002773",
  "term": "Heading",
  "field": "Industrial and trades",
  "definition": "An underground excavation driven horizontally or at a slight incline into a rock mass, serving as a primary access way or for exploration. This tunnel advances into the ore body or barren rock, providing pathways for ventilation, transport, and personnel. The dimensions and support methods for a heading depend on ground conditions and its intended purpose.",
  "synonyms": [
    "roadway"
  ],
  "subject": "Mining and extraction",
  "translations": {
    "de": "Abbau",
    "es": "galería",
    "fr": "galerie"
  },
  "url": "https://mlchart.com/terminology/industrial/heading/"
}