The upward cash-flow trajectory is set to ramp up another notch...

The upward cash-flow trajectory is set to ramp up another notch in the June 2018 quarter and beyond as the operating rig count moves higher from the peak of 40 that were operating in the Dec qtr and the absence of up-front rig mobilisation costs outlays incurred in the Dec qtr.
The total rig count across the business is about 60 rigs and with another 20 rigs to be deployed in (say) the next 18 months or so, working more and longer shifts over 3 year contracts with top tier miners, there’s a sustained period of several years of cash-backed earnings growth ahead.
The market hasn’t worked this out yet and the current share price doesn’t reflect the future prospects of the business so the buying opportunity remains at these share price levels.
And full marks to these guys for their comprehensive and relevant market disclosures, they’re up there with the best on that front too.