asked the Minister for Industry and Commerce if the maps used in his Department have the international grid superimposed on them; if those maps are the basis for the identification of those places in the State and its surrounding waters which are being explored for minerals, oil and gas; and if he is satisfied that the maps are accurate.
Ceisteanna—Questions. Oral Answers. - Mineral Exploration Maps.
15.
It is not clear from the question what is meant by the term international grid. All maps used in my Department in connection with exploration for minerals, oil and gas, are covered by the international system of lines of latitude and longitude. Maps used for the identification of places in the State which are being explored for minerals are based on townland boundaries as indicated on the 6" Ordnance Survey Map. A cartographic grid based on lines of latitude and longitude prepared by the Director of the Geological Survey is used for the identification of areas in the Continental Shelf.
I am satisfied that the maps in use in my Department are sufficiently accurate for their purpose.
The Minister did mention that the director introduces the identification lines within the townlands. Is that accepted international procedure?
No, I am sorry, Deputy. Maps used for the identification of places in the State which are being explored for minerals are based on townland boundaries, as indicated on the 6" Ordnance Survey Map. In the case of the Continental Shelf the grid is prepared by the director of the GSO and, indeed, is known by his name now as the Williams grid.