Devil seam

{
  "id": "MLC-T-IND-001684",
  "term": "Devil seam",
  "field": "Industrial and trades",
  "definition": "A thin, irregular, and often discontinuous layer of soft clay or dirt found within a coal seam. This layer represents a depositional break during the coal's formation and creates a plane of weakness within the coal bed. The presence of a devil seam complicates mining operations by reducing the stability of the mine roof and walls and lowering the quality of the extracted coal.",
  "subject": "Manufacturing",
  "see_also": [
    "garboard strake"
  ],
  "translations": {
    "de": "Teufelsnaht",
    "es": "costura del diablo",
    "fr": "diable de couture"
  },
  "url": "https://mlchart.com/terminology/industrial/devil-seam/"
}