It's not mining, it's staking.
There's no actual mining work being done by participants, they just get rewarded with more coins if they hold.
This. I'm guessing that this is a ploy to increase the price of MNE as people will want the "free" Dynerium they get if they buy MNE and hold it for a couple of weeks.
All this are well explained by the Dev be it mining or staking but what is not clear is the minimum amount of MNE that can do the job and the staking might be proportional to the MNE in the wallet but the Dev should not leave any room for guess work, he should try to explain the process in more detail.