I have no mining accident record for a Thomas Elliott during the 1918-1924 time period.
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/
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....
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”