Scanning: CONSOL Energy Mine Map Preservation Project

CONSOL Energy Mine Map Preservation Project

CONSOL Energy Inc.
National Mine Map Repository, US Dept. of the Interior, Office of Surface Mining, Reclamation & Enforcement
Pennsylvania Dept. of Environmental Protection
University Library System, University of Pittsburgh

OVERVIEW
& STATISTICS

SURVEYING

TREATMENT

SCANNING

RESOURCES

CONSOL
CONSOL Energy Inc.

PA DEP
Pennsylvania Dept. of Environmental Protection

NMMR
National Mine Map Repository,
US Dept. of the Interior,
Office of Surface Mining, Reclamation & Enforcement

ULS
University Library System, University of Pittsburgh

Scanning & Image Processing

Scanning

After treatment, the maps are safely packaged and transported to the National Mine Map Repository (NMMR) facility in Pittsburgh, PA. The maps are scanned on an overhead Cruse scanner equipped with a suction table.

Scanning Specs:
-Cruse Table Scanner CS 285/1100 ST/FA
-58” x 90” vacuum table
-8 or 16 bit grayscale
-12 or 24 bit true color
-220 – 630 DPI
-File size approx 1.1 GB

Maps that require assistance staying flat can be lightly suctioned to the table.
	Map with suction turned off.	Map with suction turned on.

Image Processing

After a map has been scanned, the master image is saved as a TIFF. The images are captured at a high resolution and the resulting TIFF files are very large, up to 1 GB. The images below are JPEG derivatives of master TIFFs. The JPEG images are less sharp in detail, but can be viewed more easily on the web since they are lower in file size.

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Last Updated 1/26/2009
ULS Preservation Department