You don't give dates, but I see Liberton, Midlothian is mentioned in this 1842 inspector's report:
http://www.scottishmining.co.uk/238.htmland on the same website, Drum is mentioned:
http://www.scottishmining.co.uk/8.html" Whereas two coalliers, viz. William Wilson and William Brown, did some time ago come from Sir John Hope's Coalliery, and engage themselves to Mr Armstrong, to work for the space of one year, at his
Colliery at Drum. They should, previous to this time, have entered to their engagements; instead of doing so, they have concealed themselves, and, it is thought, about some neighbouring collieries. This is giving notice, that if these two men do not enter immediately into said service, and perform their engagements, strict search will be made, and if found, will be punished according to law. It is hoped that after this public notice, no Coal Master will encourage or employ said men. A suitable reward will be given, for information where these two men are lurking. [Caledonian Mercury 21 October 1805]"
Interestingly in 1773 a John Russell absconded from another colliery:-
http://www.scottishmining.co.uk/8.html"BOUND COLLIERS DESERTED - Whereas John Russell, James and Alexander Loves, bound Colliers to Quarrel Colliery, have RUN OFF, and deserted their service ; intimation is hereby made to all coal-masters, tacksmen of coal- works, or others, who may harbour or employ them, that Carron Company, tacksmen of the above colliery, are determined to prosecute them for the penalties due by statute and common law, for harbouring or employing bound colliers, it is there-fore requested, that any Gentleman to whom they may have applied for employment, will give notice thereof to Carron Company. [Caledonian Mercury 28 April 1773]"