Room-and-pillar mining

{
  "id": "MLC-T-ENE-002024",
  "term": "Room-and-pillar mining",
  "field": "Energy",
  "definition": "The most common method of underground mining in which the mine roof is supported mainly by coal pillars left at regular intervals. Rooms are places where the coal is mined; pillars are areas of coal left between the rooms. Room-and-pillar mining is done either by conventional or continuous mining.",
  "subject": "Coal",
  "references": [
    "EIA Glossary"
  ],
  "url": "https://mlchart.com/terminology/energy/room-and-pillar-mining/"
}