Paragraph B.1 Development not permitted
Development is not permitted by Class B if—
the external appearance of the mine would be materially affected;
any building, plant or machinery structure or erection or any deposit of minerals or waste—
would exceed a height of 15 metres above ground level, or
where a building, plant or machinery would be rearranged, replaced or repaired, the resulting development would exceed a height of 15 metres above ground level or the height of what was replaced, rearranged or repaired, whichever is the greater;
any building erected (other than a replacement building) would have a floor space exceeding 1000 square metres;
the cubic content of any replaced, extended or altered building would exceed by more than 25% the cubic content of the building replaced, extended or altered or the floor space would exceed by more than 1000 square metres, the floor space of that building;
it would be for the purpose of creating a new surface access to underground workings or of improving an existing access (which is not an active access) to underground workings; or
from a date 6 months after the coming into force of this order, it would be carried out on land within the definition in paragraph F.2(1)(b), and a plan of that land has not, before that date, been deposited with the mineral planning authority.