Nomenclature

Selection of data files is based on a specific nomenclature criteria

3 letter suffixs indicate the type of file

	E00	-  ArcInfo Export File
	TIF	-  TIFF file
	TFW	-  TIFF registration file

	Note:  When copying the TIFF file over to be used in an Arc software package the TFW file must 
travel with the TIF file.  Both must be copied to the same location.

Coal seams are abbreviated as shown in Coal codes.xls

	A file named  Ba.e00 indicates that it is a coverage of the B Coal Seam (Lower Kittanning) that 
was developed from Mylar 1 of 2 for that quad.  A file Pittb.e00 indicates a file from the Pittsburgh coal 
seam developed from Mylar 2 of  2.  A file Ba.tif is a TIFF file from the B seam created from the first 
mylar of the B seam for that quad.

	A file named bw indicates that this is the coverage created from the WPA mine maps.  In some 
instances the coverages ending in ‘w’ will also show the permits applications that were denied.

Quads are abbreviated as shown in distribution.xls




The Column Date Update in the CD-Code.xls spreadsheet is the date the quad is updated to.  All plots 
previous to that date have been added to the mylar overlay.


These coverages were developed from the Harrisburg Bureau of Mining and Reclamation mylar map 
system, that was developed from various multiple sources.  These coverages show the extent of permitting 
to the best of the draftsman’s ability.  No attempt was made to correlate coal seams when the quads were 
digitized.  Some coverages for coal seams may appear where the coal seam does not exist.  Care should be 
taken when these anomalies are discovered.  All reasonable attempts to correct the coverages will be made 
when sufficient data is provided to the Bureau of Mining and Reclamation.  These coverages are presented 
to give a reasonable guideline of what is on the ground at that area.  These coverages should not be sole 
means of decision making and are in no way a subsitiute for actual on the ground observation.

Even though the term “Noncoal” has gone out of vogue it is used here as coverage names and image 
names because it will conform to the 8 dot 3 DOS naming convention.  Recognizing that many users of 
this data may not have operating systems that recognize names large than the 8 dot 3 system and finding 
no word better suited it was decided for this edition to utilize the term “noncoal”.