Speaking at the public meeting in Ravenscar, Graham Clarke, operations director for Sirius Minerals, said the only way to access the potash was from within the national park.
BBC: Consultation starts on North York Moors mine plan
2.
North Yorkshire Police and a Sea King search and rescue helicopter from RAF Leconfield have joined the search for Mr McLean, alongside the Whitby, Robin Hood's Bay and Ravenscar Coastguard Rescue teams and Scarborough Mountain Rescue Team.
BBC: Alan McLean disappearance sparks major search