Below is the related data that I found for Pennsylvania Mining Accidents 1869-1918:
Date of Accident / Name of Person / Age / Name of Mine (Town) / F=Fatal or N=Nonfatal / Page & Reference Source / County
1902APR13 COSGORVE, JOHN 31 CENTRALIA F 310 59
1877 COSGROVE, ANDREW 45 PRESTON No.2 F 43 55
1877JUN5 COSGROVE, ANDREW PRESTON No.2 F 36 55
1890DEC18 COSGROVE, ARCHIA 22 HOYT N 107 57 Luzerne
1877FEB19 COSGROVE, CHARLES 14 JENKINS No.6 N 146 55 Luzerne
1917FEB16 COSGROVE, EDWARD 26 N 115 60a Lackawanna
1916MAY27 COSGROVE, EUGENE 23 VON STORCH N 245 60a Lackawanna
1882OCT17 COSGROVE, FRANK 40 EMPIRE N 162 56 Luzerne
1898JAN12 COSGROVE, FRANK 24 BABYLON N 91 59 Luzerne
1875OCT15 COSGROVE, HENRY N 20 55 Schuylkill
1881MAY3 COSGROVE, JAMES PACKER N 87 55
1883SEP28 COSGROVE, JAMES PACKER No.3 F 49 57 Schuylkill
1883SEP28 COSGROVE, JAMES 55 PACKER No.4 F 33 57
1916JAN12 COSGROVE, JAMES 24 YATESBORO No.3 N 1282 60b
1877 COSGROVE, JOHN F 26 55
1877FEB13 COSGROVE, JOHN INDIAN RIDGE F 23 55 Schuylkill
1887MAY26 COSGROVE, JOHN 27 NANTICOKE No.1 N 67 57 Luzerne
1888FEB4 COSGROVE, JOHN 28 NANTICOKE No.1 N 125 57 Luzerne
1896SEP24 COSGROVE, JOHN MIDDLE CREEK F 250 57 Schuylkill
1896SEP25d COSGROVE, JOHN 28 MIDDLE CREEK F 280 57 Schuylkill
1898JUN29 COSGROVE, JOHN 26 PIERCE N 29 59 Lackawanna
1904MAR3 COSGROVE, JOHN 37 PARDEE No.6 N 719 60b
1914APR29 COSGROVE, JOHN 22 PENNSYLVANIA No.21 N 593 60b Cambria
1875DEC22 COSGROVE, JOHN E 39 TOMPKINS F 197 55
1910AUG1 COSGROVE, JOSEPH 17 EWEN F 213 60a Luzerne
1883OCT6 COSGROVE, MICHAEL LOCUST SPRING N 89 57 Northumberland
1890JUL25 COSGROVE, PAT. TURKEY RUN N 227 57 Schuylkill
1881DEC30 COSGROVE, PATRICK 17 Schuylkill F 86 55
1881DEC30 COSGROVE, PATRICK 17 WILLIAM PENN F 60 55
1894DEC24 COSGROVE, PATRICK 15 TWIN F 109 57
1908APR11 COSGROVE, PATRICK 31 DORRANCE N 209 60a Luzerne
1918FEB1 COSGROVE, PATRICK 33 N 639 60a Northumberland
1909MAY1 COSGROVE, PETER 45 CENTRAL N 195 60a
1897JUL19 COSGROVE, THOMAS 19 HUGHESTOWN No.1 N 83 59
1917APR3 COSGROVE, THOMAS 26 N 142 60a Lackawanna
1886NOV27 COSGROVE, WILLIAM 17 F 63 57 Luzerne
If any of the above are of interest to you, get back with me. I do have a little more information about these specific accidents.
I have no William Cosgrove that fits your criteria. Perhaps you can find help on these web sites: http://www.linkpendium.com/https://beta.familysearch.org/
“LDS Family Search” If you place your browser on the name on the left, more information comes up. http://www.findagrave.com/ http://www.deathindexes.com/ http://www.portal.health.state.pa.us/portal/server.pt/commun...
“Pennsylvania Death Certificates”
The state of Pennsylvania has uploaded births in the year of 1906 and deaths for the years 1906 to 1961+. The link to the searchable indices can be found at:http://www.portal.state.pa.us/portal/server.pt/community/pub...
Also at this webpage is an explanation of how to obtain non-certified copies of the birth or death certificate for $3 per copy. The link for the form that should be used to request certificates can also be found on this webpage. Go down almost to the bottom where the link is to the PDF form you can print and mail in. Look for the words "download the death application form”.
These records are grouped in alphabetical order in some years and in soundex order in other years. To determine the soundex code for the surname that you are searching you can go to the link at:http://searches.rootsweb.ancestry.com/cgi-bin/Genea/soundex....
Some names are alpha by first name. Those names are part of the soundex years of the death indices. You can determine the soundex code of the surname then look in those years under the soundex code by first name.
Searchers have experienced the indices, which are in a PDF format, slow to load. Be patient if at first it appears that the indices are not loading. To understand what the soundex system is and how it is used you can go to:http://genealogypro.com/articles/soundex.html
For the county codes, go to http://www.papl8s.com/pennsylvania_county_codes.htm
“Pennsylvania Public Records” http://www.portal.state.pa.us/portal/server.pt?open=514&...
“Pennsylvania Public Vital Records Search 1906-1959”
“Mining Accidents U.S., Canada, New Zealand and Australia”