Kelsey Biondo, et al., EPCAMR, "Processing Underground Mine Maps"

MINE SUBSIDENCE INSURANCE (MSI)

PROGRAMBy Kelsey Biondo, Samantha

Schafer, and David Svab

About the Program

Funded through a grant from the Pennsylvania Department of Environmental Protection

Purpose: to create a digital archive of abandoned coal mining maps to be open to the public

Working in collaboration with 9 major colleges and universities

Maps come from the Wilkes-Barre and Pottsville DEP offices

Online Map Inventorywww.paminemaps.psu.edu

Equipment and Programs

Scanning Colortrac Smart LF Scanners

42 inch 56 inch

Smartworks Pro Scale of 400 DPI

Geo-referencing and Digitizing ArcMap version 10.2.1 ESRI PASDA (Pennsylvania Spatial Data Access)

Surface image layer

PHUMMIS Pennsylvania Historic Underground Mine

Map Inventory System Catalog all maps that are scanned,

geo-referenced, and digitized

MSI MAP SCANNING

Scanning Steps

Initial Scan Check for Errors Rotate

Look for a north arrow If no north arrow is present, follow alignment

of text Deskew Mirror (if necessary) Look for Title

Initial Scan

Scanning Errors

GOOD SCAN SCANNING ERROR

RotateBEFORE AFTER

DeskewBEFORE AFTER

MirrorBEFORE AFTER

Map Title

Titles are where we find the information on the map Colliery Coal Company Coal Vein Name Coal Field County, Municipality,

Quadrangle Scale Map Date

Types of Maps

Underground Mine Map (UMM) Surface Map Cross Section Map

Underground Mine Map (UMM)

Surface Map

Cross Section Map

MSIGEO-REFERENCING SURFACE AND

UNDERGROUND MINE MAPS

Geo-referencing Steps

Bring desired file into ArcMap Find a point on the map that can be

matched up with a point on the PASDA surface image layer Create first “control point”

Continue until 4 control points have been set

Check residuals

Bring file into ArcMap

ArcMap places the map into the wrong place

Near Santo Domingo, Ecuador

Finding Control Points

Useful control points Street crossings Buildings Bridges Grid System

Use ESRI to find general location

Use PASDA to match control points

Grid System

Created a grid layer in GIS as a Reference Guide

Grid systems based on company or colliery?

First Control Point

Snaps the map to the correct area

Jessup, PA

Second Control Point Rotates the

map

Third Control Point Brings the map to the correct

scale

Fourth Control Point Minimizes amount of error in residuals

Checking Residuals

All control point residuals must be less than 5.0

Final Geo-referencing Product

Difficult Maps

MSIDIGITIZING SURFACE AND

UNDERGROUND MINE MAPS

Digitizing Steps

Mark shafts, drifts, and slopes Only if they reach the surface

Draw a polygon around the underground mining area Cut out large areas that are not mined

(doughnuts) Mark coal elevation points

Marking Shafts, Drifts, & Slopes

SLOPE DRIFT

Marking Shafts, Drifts, & Slopes

SHAFTS

Drawing Area PolygonsBEFORE

Drawing Area PolygonsAFTER

Drawing Area Polygons

3-D Representation

Dunmore No.1

Dunmore No.2

Dunmore No.3

This image shows the layering of 3 coal seams

Cutting Areas (Doughnuts)

BEFORE AFTER

Marking Elevation Points (zoomed in)

BEFORE AFTER

Marking Elevation Points (zoomed out)

BEFORE AFTER

Final Digitizing Product

Coal Elevation Points

Shafts

Project Update

Maps scanned 7,923

Maps geo-referenced 1,885

Maps digitized 515

QUESTIONS?