TY - SER
KW - journalists
KW - FBI
KW - sheriffs
KW - boy detectives
KW - police
KW - private investigators
KW - coal industry
KW - kidnappings
AU - Franklin W. Dixon
AB - Frank and Joe Hardy travel to fictitious Ridge City—a rowdy coal mining town just outside of Pittsburgh—where their friend Liz Trimmer, a mine safety worker, has been kidnapped.
C1 - 1990s
C3 - Western Pennsylvania
C4 - Children’s; Mystery
CY - New York
LA - English
M3 - Novel
N1 - Franklin W. Dixon  is a pseudonym used by different authors to write The Hardy Boys series.
N2 - Frank and Joe Hardy travel to fictitious Ridge City—a rowdy coal mining town just outside of Pittsburgh—where their friend Liz Trimmer, a mine safety worker, has been kidnapped.
PB - Pocket Books
PP - New York
PY - 1993
EP - 154 p.
TI - The Mystery in the Old Mine: The Hardy Boys, #121
ER -