{
 "layers": [
  {
   "layerId": 0,
   "layerName": "Industrial Minerals Locations 2015",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "Clay and shale",
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     "groupId": "0",
     "height": 20,
     "width": 20,
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    },
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     "groupId": "0",
     "height": 20,
     "width": 20,
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      "Coal (Underground)"
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    },
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     "label": "Limestone and dolomite",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAXUlEQVQ4jWNhoDJgGTWQRmGox+DEwMUggFfnC4ZzDA8YHhBnYDFDOUMcgxteA9MYshlmM0wjzkAKAMuogSM2DO8yvGZYy3AJr84/DG+JN7CJIYYc1w3lMGQYRAYCALduDe9GGOrjAAAAAElFTkSuQmCC",
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     "groupId": "0",
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    {
     "label": "Multiple commodities",
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      "Clay,   Sand & Gravel, Sandstone,",
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    },
    {
     "label": "Salt",
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    },
    {
     "label": "Sandstone and conglomerate",
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