the developer has not previously notified the mineral planning authority in writing of its intention to carry out the development (specifying the nature and location of the development);

the relevant period has not elapsed;

any explosive charge of more than 2 kilograms would be used;

any structure assembled or provided would exceed 15 metres in height; or

in the case of boreholes for locating and appraising the condition of mine operations, the borehole exceeds 160 metres in depth.