prospectorsn

{
  "name": "dobuild",
  "base": "",
  "fields": [
    {
      "name": "loc_id",
      "type": "ID"
    },
    {
      "name": "worker_id",
      "type": "ID"
    },
    {
      "name": "duration",
      "type": "t_utime"
    }
  ]
}