Undercast

{
  "id": "MLC-T-IND-006326",
  "term": "Undercast",
  "field": "Industrial and trades",
  "definition": "A passage or tunnel constructed beneath another roadway or airway in a mine, primarily to direct airflow for ventilation purposes. Undercasts allow fresh air to be routed to working faces while contaminated air is directed to return airways, preventing mixing. They are a common feature in complex underground ventilation networks.",
  "subject": "Mining and extraction",
  "translations": {
    "de": "Überfahrt",
    "es": "paso inferior",
    "fr": "passage inférieur"
  },
  "url": "https://mlchart.com/terminology/industrial/undercast/"
}