I'll go first. Thank you.
Certainly, the increasing demand across all commodities has been a bit of a challenge. Last year we saw the ramp up, principally once the Keystone pipeline had the problems in South Dakota, and that widened oil spreads and then increased demand I would have said unexpectedly early. We knew there was a coming pipeline constraint that was more a late 2018-19 kind of thing, which we're now seeing. That's certainly impacting demand for crews and resources.
The other thing we've seen is that potash tends to be on the northern part of our territory. We've also seen the dryness in the south on the Prairies, and more production to the north has concentrated a lot of demand. We are congested to some degree in the Edmonton area, but we are responding. We're hiring. We're expanding capacity and moving record volumes at the same time.