Its a hard one. I wouldn't be expecting any divs from it for...

Its a hard one. I wouldn't be expecting any divs from it for years, they have to be able to stand on their own 2 feet. The cost of selling the shares on a secondary market could be so high its not worth selling them. I know Primary Markets charge 6% to buyer and seller plus escrow fees no matter the size of share transaction. That's assuming someone wants to buy them as well which is probably pretty slim considering how on-the-nose mining services companies are at the moment.
By all accounts it looks like a profitable business, so who know the electric people mover might take off when fitted out with a LIS battery, so one of the bigger players swoops in and buys it up. But its probably just wishful thinking.
In all honesty I didn't buy into PPK for the mining business so I'll probably just hold onto them for now as a bonus and just see how things pan out.