DMO Mining Permits Industrial Minerals Surface (Historic)

A layer containing the permit boundaries of Industrial Mineral Surface Mines. Data was converted over from the physical "Mylar Review" system for surface mine permit location information requests. The physical topographic maps and mylar overlays of that system have been scanned, georeferenced, and vectorized to create the permit boundary polygons with an index number attribute. The corresponding index card data has been entered in a spreadsheet. The polygon layers’ attribute tables were joined with the spreadsheet. More recent surface mine permit boundaries and attributes were digitized directly as polygons from permit documents. This layer represents a combination of various legacy surface mine permit tracking systems. All future surface mine permit boundaries will be updated here, as the mylar system is phased out.本图层包含工业矿物露天矿山的许可边界。本图层数据由用于露天矿山许可位置信息查询的实体「Mylar Review」系统转换而来。该系统的实体地形图与聚酯薄膜覆盖图已完成扫描、地理配准与矢量化处理，从而生成带有索引编号属性的许可边界多边形。对应的索引卡片数据已录入电子表格，并将多边形图层的属性表与该电子表格进行关联。近期的露天矿山许可边界及属性信息则直接从许可文档中矢量化为多边形。本图层整合了多款传统露天矿山许可跟踪系统的数据。随着「Mylar Review」系统逐步停用，后续所有露天矿山许可边界都将在此更新。