In this chapter we showed that the owner of an oil deposit in a fully competitive economy would keep

In this chapter we showed that the owner of an oil deposit
in a fully competitive economy would keep his or her wealth constant and
achieve the highest consistent level of constant consumption by following the
Hartwick rule. Show that this would also be the case for the sole owner of a
fishery, given sustainable yield harvesting. Show that it would also be the
case for someone owning an oil deposit and a fishery.