It is bidding to extract 25,500 tonnes of common green granite from the south of the volcanic plug. And bosses aim to get 5,100 tones of Blue Hone granite from the northern part of the island.
A significant amount of fallen granite boulders are to be lifted. Workers are also expected to place explosives inside holes in the rock to blast some stone.
The work would be timed to avoid the bird breeding season. And an ornithologist would monitor activity to ensure it doesn’t impact birds.
A shelter is also to be erected for contractors to eat in, store clothing and sleep in during extreme weather. Kays Curling said it has a long-term lease in place with the Marquess for the extraction of granite.
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