Here's a quotation from Cornwall County Council's website about Cornish Railways:
"1844- : The Liskeard and Caradon Railway was built to supplement the work of the Liskeard and Looe Union Canal of 1828, carrying ore and granite from the Caradon area towards Looe. It opened from Moorswater near Liskeard, at the terminus of the canal, to South Caradon in 1844, and from Caradon to Cheesewring in 1846. Wagons were run down from the mines and quarries to be hauled back up by horses."
What's more, so I have learnt, the pathway to the Cheesewring from Minions follows the line of the the dismantled Cheesewring Line railway:
I just thought you'd like to know.
You can see plenty of Bernard's excellent photography which features steam locos and railway history at his website. Follow the link at the top right of the blog: Steam and Rail Photos by Bernard Mills.