{
  "fields": [
    {
      "name": "region",
      "type": "string",
      "title": "Region"
    },
    {
      "name": "country",
      "type": "string",
      "title": "Country"
    },
    {
      "name": "year",
      "type": "integer",
      "title": "Year"
    },
    {
      "name": "coal_type",
      "type": "string",
      "title": "Coal type"
    },
    {
      "name": "total_tonnes",
      "type": "number",
      "title": "Total Tonnes"
    },
    {
      "name": "total_sales_value_aud",
      "type": "number",
      "title": "Total Sales Value (AUD)",
      "description": "Australian dollars, as reported."
    }
  ],
  "missingValues": [
    ""
  ],
  "primaryKey": [
    "country",
    "year",
    "coal_type"
  ]
}