We've searched the internet and found the largest collection of On30 Scale trains for sale is on eBay. Below are the listings for 'mining train'.

Bachmann On30 Scale Train Steam Loco 2 6 0 Analog Colorado Mining Company 25262
Bachmann On30 Scale Train Steam Loco 2 6 0 Analog Colorado Mining Company 25262
$149.76
Time Remaining: 3d 2h
Buy It Now for only: $149.76
The Rio Grande Southern Story Vol 2 HC Book Telluride Pandora  Mines On3 HOn3
The Rio Grande Southern Story Vol 2 HC Book Telluride Pandora Mines On3 HOn3
$49.95 (1 Bid)
Time Remaining: 5d 7h 11m
On30 Bachmann Logging  Mining Car Wood Sided Dmp Car 3 pcs
On30 Bachmann Logging Mining Car Wood Sided Dmp Car 3 pcs
$74.99
Time Remaining: 7d 21h 37m
Buy It Now for only: $74.99
S Sn3 CRAFTSMAN BUILDING  STRUCTURE  COEUR d ALENE MINE KIT  UNSTARTED
S Sn3 CRAFTSMAN BUILDING STRUCTURE COEUR d ALENE MINE KIT UNSTARTED
$89.95
Time Remaining: 9d 4h 53m
Buy It Now for only: $89.95
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
$89.95
Time Remaining: 15d 23h 29m
Buy It Now for only: $89.95
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
$69.00
Time Remaining: 17d 8h 36m
Buy It Now for only: $69.00

Other On30 Scale train items recently purchased through this site:

The Rio Grande Southern Story Vol 2 HC Book Telluride Pandora Mines On3 HOn3
Bachmann On30 Scale Train Steam Loco 2 6 0 Analog Colorado Mining Company 25262
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
On30 Bachmann Logging Mining Car Wood Sided Dmp Car 3 pcs
S Sn3 CRAFTSMAN BUILDING STRUCTURE COEUR d ALENE MINE KIT UNSTARTED
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box