{
  "series_id": "JTS110099000000000_TIGHTNESS",
  "source": "derived",
  "shortName": "Job Tightness (Mining & Logging)",
  "updateFrequency": "monthly",
  "unit": "ratio",
  "derivation": {
    "type": "ratio",
    "numerator": "JTS110099000000000JOL",
    "denominator": "UNEMPLOY",
    "description": "Job openings for Mining and Logging divided by unemployment level"
  }
}