The author has identified the following significant results. The mine refuse inventory maps were prepared in response to a need by both the State and the coal industry. The lack of information on the scope of the problem handicapped all people concerned in drafting realistic legislation for a severance tax on coal production to raise funds for restoration of refuse sites. The inventory was conducted rapidly and economically, and demonstrated the benefits which can be derived through remote sensing methods

Amato, R. V.

Leshendok, T. V.

Russell, O. R.

Wier, C. E.

Wobber, F. J.

English

The author has identified the following significant results. The Kings Station Mine in Gibson County, Indiana has experienced considerable roof fall problems. Detailed fracture mapping of the mine area was done with ERTS-1 and aircraft imagery, and a prediction map of roof problem areas was produced in advance of a visit. The visit to the mine and discussions with the operator indicated that of four zones mapped as potential problem areas, three coincided with areas of excessive roof fall. This positive correlation of 75% lends confidence to the validity of the technique being applied in the investigation. The mine officials expressed an interest in the project and are anxious to see the final product maps which are forthcoming

Leshendok, T.

NASA Technical Reports Server

E 7.3 1/
EARTH SATELLITE CORPORATION
(EarlbSat)
"Made available under tASA sponsorshp
in the interest of early and wide dis-
semination of Earth Resources Survey
Program information and without liabiliU
for any use made thereof."
1747 PENNSYLVANIA AVENUE, N.W.,
TELEPHONE: (202) 223-8100
WASHINGTON, D. C. 20006
TELEX: EARTHSAT64449
September 10, 1973
ERTS Program Manager
Code ER
NASA Headquarters
Washington, D. C. 20546
RE: Contract No. NAS5-21795 GFSC ID ST 355
Gentlemen:
The Indiana Geological Survey and Earth Satellite Corporation
(EarthSat) are pleased to submit a progress report for the period of
July 1, 1973 to September 1, 1973. To facilitate, for review by NASA,
a consistent summary format has been adopted for month-to-month
reporting.
A. TITLE: Study of Application of ERTS-A Imagery to Fracture-
Related Mine Safety Hazards in the Coal Mining
Industry
B. PRINCIPAL INVESTIGATOR: Dr. Charles E. Wier (SR #325)
6 17' c0" o > egA>/ seq /5 Me
C. CO-PRINCIPAL INVESTIGATOR: Dr. Frank J. Wobber
D. PRINCIPAL CONTRIBUTORS: Dr.
Dr.
Mr.
Mr.
Mr.
Charles E. Wier
Frank J. Wobber
Orville R. Russell
Roger V. Amato
Thomas Leshendok
E. SUMMARY OF ACCOMPLISHMENTS:
0 A four-day field trip was made in southwestern Indiana to
conduct discussions with underground mine operators, make
examinations of roof falls in an underground mine, make
E73-1097 0) STUDY OF APPLICATION CF
ERTS-A INAGEBY TO FRACTURE-BELATED NINE
SAFETY HAZARDS IN THE COAL MINING
INDUSTRY Proqress Report, 1 Jul. (Earth
Satellite Corp.) 4 p HC $3.00 CSCL 08I
N73-3031
Unclas
G3/13 00970
J
0 9.7 037·r
https://ntrs.nasa.gov/search.jsp?R=19730021579 2020-03-22T22:13:38+00:00Z
September 10, 1973
examinationsof fractures and joints, and conduct an aerial
reconnaissance flight for fracture validation.
* Preliminary mine hazards prediction maps were prepared and
used in discussions with mine operators. These maps served
to generate operator views on the validity of data, technique
of presentation and utility to the mining community. The
operators were most cooperative in supplying information and
ideas on the occurrence and prevention of mine roof falls.
Multispectral imagery from the March 28th C130B underflight
(Mission 230) was received in late August. Preliminary
analysis suggests that the data has limited application for
fracture mapping. The near infrared bands, particularly at
1.2pm - 1.3pm wavelengths appear to be excellent for mine
subsidence detection under the conditions existing at the
time of data acquisition, i.e., ground that is highly satu-
rated with water from heavy rainfalls.
* Visits were made to the Old Ben Coal Company and Amax Coal
Company main offices to obtain their views on the program.
A series of illustrations (35mm slides), depicting various
applications of ERTS data to mine reclamation, mine safety
and mined land inventory, were prepared at NASA's request
for Senator Frank Moss for various briefings.
F. SIGNIFICANT RESULTS:
The Kings Station Mine in Gibson County, Indiana has
experienced considerable roof fall problems. Detailed
fracture mapping of the mine area was done with ERTS and
aircraft imagery, and a prediction map of roof problem areas
was produced in advance of a visit. The visit to the mine
and discussions with the operator indicated that of four zones
mapped as potential problem areas, three coincided with areas
of excessive roof fall. This positive correlation of 75% lends
confidence to the validity of the technique being applied in
the investigation. The mine officials expressed an interest in
the project and are anxious to see the final product maps which
are forthcoming.
NASA Headquarters
September 10, 1973
G. RECOMMENDATIONS FOR TECHNICAL CHANGES:
The development of a valid technique for predicting zones of
potential roof fall in underground coal mining is of great
significance for mine safety and should be investigated in
depth. It is recommended that the techniques being applied
in the current investigation be further tested in other coal
producing areas of different geological settings. A number
of mine sites in various parts of the United States are being
evaluated for suitability for such studies.
H. PROBLEMS:
Delivery of ERTS prints has been unusually slow during this
reporting period. This is creating delays in progress in
that prints are an integral part of the analysis program, and
budgeting limitations will not permit commercial printing.
If this situation continues as the investigation nears contract
termination, a serious problem will develop in scheduling image
analysis; cost increases in the ERTS data evaluation will be
likely. A response to our requests for additional funding
(add-ons for expanded avenues of investigation) are needed to
adequately complete important work at minimum cost. Because
numerous letter requests to the National Coal Association
have brought no replies, the continuing involvement of the
Association-in our work is open to question. This may reduce
the effectiveness of the Coal Industry Seminar.
I. CHANGES TO STANDING ORDER FORMS:
None.
J. OVERVIEW OF INVESTIGATION:
During the last reporting period, analysis of all of the
underflight data, with the exception of the multispectral
scanner, was completed. Predictive mining hazards maps were
prepared, and the utility and format of the maps were dis-
cussed with mine operators in the field. The validity of the
maps was checked by correlation with roof fall problem areas
within the mines. A positive correlation of about 75% was
shown.
NASA Headquarters -3-
September 10, 1973
During the next reporting period, the 1:250,000 scale fracture
maps of the Indiana portion of the Eastern Interior Coal Basin
will be completed with the exception of data from forthcoming
ERTS imagery. Presentation techniques for the mine hazards
maps will be finalized, and drafts of the detailed (1:24,000)
mine sites will be made.
Personal contacts with a portion of the mining companies have
been established and discussions started concerning a seminar
on the applications of remote sensing to various problems of
the mining industry.
Sincerely yours,
Frank . bber
Director
Geosciences and Environmental
Applications Division
FJW:cn
NASA Headquarters


Study of application of ERTS-A imagery to fracture-related mine safety hazards in the coal mining industry

The author has identified the following significant results. The Mined Land Inventory map of Pike, Gibson, and Warrick Counties, Indiana, prepared from ERTS-1 imagery, was included in the 1973 Annual Report of the President's Council on Environmental Quality as an example of ERTS applications to mined lands. Increasing numbers of inquiries have been received from coal producing states and coal companies interested in the Indiana Program

Er.4- 1 0.0.8
EARTH SATELLITE CORPORATION
(EaribSat)
in the interest of early and wide dis-
semination of Earth Resources Survey 1747 PENNSYLVANIA AVENUE, N.W., WASHINGTON, D. C. 20006
Program information and without liability TELEPHONE: (202) 223-8100 TELEX: EARTHSAT64449
for any use madb thereof." November 9, 1973
ERTS Program Manager
Code ER
NASA Headquarters
Washington, D.C. 20546
Re: Contract No. NAS5-21795 GFSC ID ST 355
Gentlemen:
The Indiana Geological Survey and Earth Satellite Corporation (EarthSat) are
pleased to submit a progress report for the period of September 1, 1973 to
November 1, 1973. To facilitate, for review by NASA, a consistent suTmmary for-
mat has been adopted for month-to-month reporting.
A. TITLE: Study of Application of ERTS-A Imagery to Fracture-
Related Mine Safety Hazards in the Coal Mining
Industry.
B. PRINCIPAL INVESTIGATOR: Dr. Charles E. Wier (SR #325)
C. CO-PRINCIPAL INVESTIGATOR: Dr. Frank J. Wobber
D. PRINCIPAL CONTRIBUTORS: Dr. Charles E. Wier
Dr. Frank J. Wobber
Mr. Orville R. Russell
Mr. Roger V. Amato
Mr. Thomas Leshendok
E. SUMMARY OF ACCOMPLISHMENTS:
* ERTS imagery analysis has continued during this reporting period.
Analysis of various aircraft imagery has been completed and final
drafting of fracture maps of the Indiana portion of the Eastern
Interior Coal Basin has commenced. These maps which present an
integrated compilation of fracture data derived from ERTS and
aircraft imagery and from ground measurements will make fracture
data in many areas of southwestern Indiana available for the
first time. They will be a significant result of the ERTS project
for years to come.
E74-10083) STUDY OF APPLICATION OF N74-11195
ERTS-A IMAGERY TO FEACTURE-RELATED MINE
SAFETY HAZARDS IN THE COAL MINING
INDUSTRY Proqress (Indiana Geoloqical Unclas
Survey) 9 p HC $3.00 CSCL 081 G3/13 00083
https://ntrs.nasa.gov/search.jsp?R=19740003082 2020-03-23T14:02:00+00:00Z
ERTS Program Manager
Page Two
November 9, 1973
* Detailed mine hazards maps for five (5) selected mine sites have
been completed; additional data from forthcoming ERTS overpasses
will be added.
* The utility of ERTS imagery for manual discrimination of surface
mined land revegetation was tested in the Piedmont Lake area in
Ohio; an area in which EarthSat analysts had no prior information.
Estimated percentages of revegetation determined from ERTS alone
were subsequently checked in the field and found to be reasonably
accurate. From ERTS imagery acquired late in the growing season,
vegetal cover classifications can be made in 25% categories using
manual analysis procedures.
F. SIGNIFICANT RESULTS:
* The Mined Land Inventory map of Pike, Gibson and Warrick Counties,
Indiana prepared from ERTS imagery (in July 1972 - January 1973.
Type II report) was included in the 1973 Annual Report of the
President's Council on Environmental Quality as an example of
ERTS applications to mined lands.
* Increasing numbers of inquiries have been received from coal
producing states and coal companies interested in the Indiana
Program.
G. RECOMMENDATIONS FOR TECHNICAL CHANGES:
Various coal resources and environmental problems which can demonstrate
ERTS contributions are being discussed with the Technical and Scientific
Monitor. These are summarized as follows:
A practical demonstration of predictive mine safety techniques is
needed to facilitate industry acceptance and technology transfer to
other states. Work to date is very encouraging, but data from
active underground mines other than those in Indiana must be acquired
to prove the technique conclusively.
Underground coal mining operations throughout the nation are critical
to a balanced national energy supply. Localized, detailed testing in
a series of operating mines and with the cooperation of the mine
operators is required to realize an operational mining hazards predic-
tion technique. The industry is conservative, but will adopt such
procedures once they are demonstrated.
* Mine subsidence mapping and the integration of ERTS/aircraft fracture
data into a predictive procedure of subsidence hazards in Indiana
would increase the confidence of zoning decision at various admini-
strative level's. Work to date has demonstrated that areas prone to
subsidence can be identified using ERTS/aircraft data, but additional
studies of the relation of fracture systems and floodplains to subsi-
dence are needed.
ERTS Manager
Page Three
November 9, 1973
* ERTS imagery is of unique value for mapping of certain fractures
not identifiable from any aircraft imagery. Such fractures have
been mapped in the test area and observed in other states (primarily
Illinois) adjacent to the test area. A striking demonstration of
value to several states which would be of economic value in mineral
exploration and petroleum exploration and development would be an
ERTS fracture map of the Illinois Basin which incorporates portions
of Illinois, Indiana and Kentucky.
H. PROBLEMS:
Generally none. A problem related to firmly establishing the value of
the methodology of mine hazards prediction must be tested in cooperation
with coal companies. (See G above).
I. CHANGES TO STANDING ORDER FORMS:
None.
J. OVERVIEW OF INVESTIGATION
Fracture mapping of the project area is largely completed - pending
receipt and analysis of final ERTS imagery. Mine hazards mapping
procedures have been successfully tested and are being applied to the
five (5) detailed mine test sites. The final report is being prepared
as the project progresses. The value and significance of the program
has increased with the energy crisis.
Sincerely yours,
rank J. Wo er
Director
Geosciences & Environmental
Applications Division
FJW/bcc
Charles E. Wier
Principal Investigator
TASK STATUS REPORT
Contract # NAS5-21795
= Completed Tasks
TASK STATUS COMMENTS
PHASE II FIRST LOOK ANALYSIS
RECONNAIS-
SANCE ANALY-
SIS OF
ERTS-1
IMAGERY
PREPARE COMPLETE An ERTS Imagery photo-base map has been pre-
ERTS BASE pared at a scale of 1:250,000 for the area
MAP corresponding to the Vincennes, Indiana1:250,000 scale topographic sheet.
A National Mined Lands map prototype was
prepared using the base map. Others maps
are being prepared as suitable (cloud
free) imagery becomes available.
ANNOTATE COMPLETE Various data relating to coal mining hazards
BASE MAP have been compiled on a base map. These data
WITH include incidents of rooffalls resulting in
HAZARDS miner deaths, and evidence of changing
DATA mine drifts indicative of weak roof.
PRELIMINARY COMPLETE ERTS-1 imagery has been analyzed for fracture
ERTS-1 lineaments. This will be a continuing ef-
IMAGERY fort. A fracture validation system (see Task
ANALYSIS 2.0, continuing data analysis) has been
adopted.
RANK ERTS-1 COMPLETE The utility of individual spectral bands for
SPECTRAL mine hazards investigations has been estab-
BANDS lished by EarthSat based on imagery during
the summer season and good fall coverage.
This assessment will continue throughout the
year. NOTE: Based on imageryto date, MSS
Bands 5 and 7 appear to be most useful for
fracture discrimination purposes.
TASK ! STATUS COMMENTS
PHASE II (Cont'd)
PRELIMINARY COMPLETE Within the Indiana coal field the greater
COMPARISON quantity of lineaments identified on ERTS im-
OF ERTS-1 agery occur north of Terre Haute. A test site
LINEAMENTS has been selected for special study in Parke
AND KNOWN County where underground mining is present.
HAZARDS Kings Station Mine was studied.
DATA
. INITIAL COMPLETE Various image enhancement procedures have
TESTING OF been tested for application to fracture
FRACTURE analysis, and the results have been summarized
ANALYSIS for the Final Report.
TECHNIQUES
MANUAL COMPLETE The various standard manual analysis techni-
ANALYSIS ques apply equally well to ERTS imagery as to
aerial photography. Scan line traces tend to
obscure lineaments parallel to traces. Both
ERTS-l imagery and small scale photography
were applied to mapping geological lineaments.
FILM COMPLETE Standard film sandwich edge enhancement tech-
SANDWICH niques have not been used extensively due to
quality of ERTS negatives and due to availa-
bility of electro-optical instrumentation
which accomplishes same results.
3.3 COMPUTER- UNDERWAY Fracture trace angle measurement and rosette
ASSISTED plotting by computer are being programmed.
The extent of experimental processing to be
conducted will depend upon available funds.
OPTICAL/ COMPLETE Additive color and density slicing techniques
ELECTRO- are being used as required.
OPTICAL
TASK 4 STATUS I COMMENTS
PHASE II (Cont'd.)
4. GENERAL COMPLETE First analysis of the 1:120,000 scale color
ANALYSIS OF infrared (corn blight) photography as a com-
NASA AIR- plement to ERTS-1 imagery has been completed
CRAFT Fracture lineaments were identified in
IMAGERY selected study areas using a valida-
tion system.
.O/ TEST COMPLETE Mined land (environmental) information is
ERTS-l/ available from ERTS imagery. The extent of
AIRCRAFT surface mining activity, resultant water
IMAGERY TO bodies, large refuse piles and slurry ponds
PROBLEMS OF are being identified. An updated inventory
MINING AND of mined lands was completed by IGS and
ENVIRO MiENT EarthSat.
/6. PREPARE AND COMIPLETE Submitted and approved.
SUBMIT DATA
ANALYSIS
PLAN
_ _ _ 
"annan, . _ _ - "v,,l~wJ..I
TASK STATUS COMMENTS
PHASE III CONTINUING DATA ANALYSIS
CONTINUE COMPLETE National prototype for mined land inventory
APPLICATION has been prepared (Vincennes Quadrangle,
OF ERTS-1/ Indiana).
AIRCRAFT TO
MINING-EN-
VI RONMENT
STUDIES
ESTABLISH COMPLETE The preliminary validation system has been
FRACTURE revised and is being applied to all imagery
VALIDATION analysis
SYSTEM
CONDUCT DE- COMPLETE High altitude (1:120,000 scale) aerial photo-
TAILED graphy and all ERTS-imagery have been
ANALYSIS OF analyzed. Analysis of photography from NASA
ERT-l/ Aircraft Mission No. 210 and 230 plus U-2
AERIAL Flight No. 73-008 is completed.
PHOTOGRAPHY
CONSOLIDATE COMPLETE The consolidation of fracture data
FRACTURE (reduce overlays, etc. to common base) is
DATA completed.
COMPARE COMPLETE Attention is being given to the Thunderbird
UNDERGROUND Mine in Sullivan County where considerable
AVAILABLE fault and rooffall data has been assembled
MINE by the Principal Investigator. The Kings
ACCIDENT Station Mine has been examined and an under-
DATA TO ground visit made to collect data.
FRACTURE
ZONES
DELIMIT COMPLETE Several potentially hazardous areas
HAZARDOUS were predicted in the Kings Station Mine
ZONES IN preliminary to a mine visit. A visit to
ACTIVE/ the nine showed good correlation.
/ ANTICIPATED
/ / COAL MINING
// AREAS
TASK I STATUS COMMENTS
PHASE III (Cont'd)
ESTABLISH COr~PiE Areas of numerous joint intersections and
CRITERIA FOF hich density of fractures have been estab-
DETERMINING lisihe as the criteria for hiah hazard -
HAZARDOUS zores.
ZONES
6.2 PREPARE MAP UNDERWAY Five (5) test mine areas have been selEcted
OF EVALUA- fc:- detailed fracture analysis and mapping
TION OF at a scale of 1:24,000.
HAZARDOUS
ZONES
7.0 DEVELOP UiiDER:AY
PROTOTYPE
MINE SAFETY
INFORMATION
NETWORK
VISIT MINE COMPLETE All of the underground mining companies
OPERATORS active in Indiana have been visited and the
DISCUSS problems discussed.
APPLICA-
TIONS OF
HAZARDS
DATA
7.2 ESTABLISH
FORMAT FOR
MINE
SAFETY
DATA
DISTRIBU-
TION
7.. DISTRIBUTE
MINE
HAZARDS
MAP
TASK STATUS COMMENTS
PHASE III (Cont'd.)
8.0 PREPARE UNDERWAY Final report being prepared as study proceeds.
FINAL REPORT Revised final report outline completed.
AND TECHNI-
CAL BRIEFS
9.0 PREPARE UNDERWAY Early and very preliminary contacts made with
COAL INDUS- industry representation. A seminar program
TRY TECHNI- is being prepared.
CAL SEMINAR
PROGRAM


E7.4- 10.33 6.
"Made avaffabe uifir , f staor r 7
in the interest of early-ari:
semination of Earth Resources Survey EARTH SATELLITE CORPORATION
Program information and without liability (EartbSat)
for any use made thereof."
1747 PENNSYLVANIA AVENUE, N.W., WASHINGTON, D. C. 20006
TELEPHONE: (202) 223-8100 TELEX: EARTHSAT64449
February 26, 1974
ERTS Program Manager
Code ER
NASA Headquarters
Washington, D.C. 20546
Re: Contract No. NAS5-21795 GFSC ID ST 355
Gentl emen:
The Indiana Geological Survey and Earth Satellite Corporation (Earth-
Sat) are pleased to submit a progress report for the period of January 1,
1974 to March 1, 1974. To facilitate, for review by NASA, a consistent
summary format has been adopted for month-to-month reporting.
A. TITLE: Study of Application of ERTS-A Imagery to Fracture-
Related Mine Safety Hazards in the Coal Mining
Industry.
B. PRINCIPAL INVESTIGATOR: Dr. Charles E. Wier (SR #325)
C. CO-PRINCIPAL INVESTIGATOR: Dr. Frank J. Wobber
D. PRINCIPAL CONTRIBUTORS: Dr. Charles E. lier
Dr. Frank J. Wobber
Mr. Orville R. Russell
Mr. Roger V. Amato
Mr. Thomas V. Leshendok
E. SUMMARY OF ACCOMPLISHMENTS:
This is the last Type I report to be submitted as part of
the experiment.
All analytical work has been completed, the various map pro-
ducts are in the final stages of preparation as is the final re-
port draft.
E74-10336) STUDY OF APPLICA"ION OF N74-18C12
ERTS-A IMAGERY TO FRACTURE-BELATED HINE
SAFETY HAZARDS IN THE COAL NINIG
INDUSTRY Eroqress eport, 1 (Earth Unclas
Satellite Corp.) 5 p HC $4.00 CSCL 08I G3/13 00336
https://ntrs.nasa.gov/search.jsp?R=19740009899 2020-03-23T10:25:16+00:00Z
ERTS Program Manager
February 26, 1974
Page Two
The contract add-on for a coal mine refuse inventory
of the Indiana coal fields, commenced in the latter part of
November, was completed and delivered by 15 February. These
map products incorporated a tabulation which identified the
mine refuse sites by section, township and range, size, and
an estimate of reclamation costs.
These maps were delivered to the Governor of Indiana,
the Division of Reclamation, the Indiana Coal Association
and selected coal companies.
F. SIGNIFICANT RESULTS
The Mine Refuse Inventory Maps were prepared in response
to a need by both the State and the coal industry. The lack
of information on the scope of the problem handicapped all
people concerned in drafting realistic legislation for a
severance tax on coal production to raise funds for restora-
tion of refuse sites. The inventory was conducted rapidly and
economically, and demonstrated the benefits which can be de-
rived through remote sensing methods.
Sincerely yours,
Frank J. Wobber
New Business Development
FJW/ec
TASK STATUS COMMENTS
PHASE III CONTINUING DATA ANALYSIS
CONTINUE COMPLETE National prototype for mined land inventory
APPLICATION has been prepared (Vincennes Quadrangle,
OF ERTS-l/ Indiana).
AIRCRAFT TO
MINING-EN-
VIRONMENT -
STUDIES
ESTABLISH COMPLETE The preliminary validation system has been
FRACTURE revised and is being applied to all imagery
VALIDATION analysis
sYST-E -. . .. 
. ..
CONDUCT DE- COMPLETE High altitude (1:120,000 scale) aerial photo-
TAILED graphy and all ERTS-imagery have been
ANALYSIS OF analyzed. Analysis of photography from NASA
ERT-1/ Aircraft Mission No. 210 and 230 plus U-2
AERIAL -- Fight-l.7-008-iscompleted.
PHOTOGRAPHY
CONSOLIDATE COMPLETE The consolidation of fracture data.
FRACTURE (reduce overlays, etc. to common base) is
DATA completed.
COMPARE COMPLETE Attention is being given to the 
Thunderbird
UNDERGROUND Mine in Sullivan County where considerable
AVAILABLE fault and rooffall data has been assembled
MINE by the Principal Investigator. The Kings
ACCIDENT Station Mine has been examined and 
an under-
DATA TO ground visit made to collect 
data.
FRACTURE
ZONES
DELIMIT COMPLETE Several potentially hazardous 
areas
HAZARDOUS were predicted in the Kings Station 
Mine
ZONES IN preliminary to a mine visit. 
A visit to
ACTIVE/ the mine showed good correlation.
ANTICIPATED
/ COAL MINING
/ AREAS
-3-
... 
TASK STATUS 
COMMENTS
PHASE III (Cont'd)
ESTABLISH COM~PLETE Areas of numerous joint intersections and
CRITERIA FOF hich density of fractures have been estab-
DETERMINING lisaeu as the criteria for hi'ah hazard
HAZARDOUS zones.
ZONES
PREPARE 1AP COMPLETE Five (5) test mine areas have been selEcted
OF EVALUA- f:- detailed fracture analysis and mappinn
TION OF at a scale of 1:24,000. Mapping is complete.
-HAZARDOUS
ZONES
7.0 DEVELOP
PROTOTYPE
MINE SAFETY
INFORMATION
NETWORK
VISIT MINE COMPLETE All of the underground mining companies
OPERATORS active in Indiana have been visited and the
DISCUSS problems discussed.
APPLICA-
TIONS OF
HAZARDS
DATA
7.2 ESTABLISH UNDERWAY No single agency in the Indiana 
State struc-.
FORMAT FOR ture authorizes underground mining. 
Dis-
MINE cussions are being held to determine 
the
SAFETY best agency through which mine safety data
DATA should be distributed.
DISTRIBU-
TION
7. DISTRIBUTE
MINE
HAZARDS
MAP
TASK STATUS COMMENTS
PHASE III (Cont'd.)
8.0 PREPARE UNDERWAY Final report is being prepared.
FINAL REPORT
AND TECHNI-
CAL BRIEFS
Discussions are underway with the National
9.0 PREPARE UNDERWAY Coal Association to conduct a short seminar
COAL INDUS- relating to the accomplishments of this pro-
TRY TECHNI- gram.. The seminar is tentatively scheduled
CAL SEMINAR for the October 1974 "Coal and the Environ-
PROGRAM ment" meeting to be held in Louisville, KY.


Study of application of ERTS-A imagery to fracture-related mine safety hazards in the coal mining industry

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