Geographical grid pattern based on the 1:1000000 international map series for the State of New South Wales facilitating the description of resource exploration title areas. A UNIT identifies an area of 1 minute of Latitude by 1 minute of Longitude and is referenced by the 1:1000000 international map series name, a number from 1 through 3456, and the letters ‘a’ through ‘z’, excluding the letter ‘i’. Map Units are further described by the NSW Mining Regulation 2016, Part 1, Clause 10: https://www.legislation.nsw.gov.au/#/view/regulation/2016/498/part1/sec10 And by Schedule 4 – Sections 1 through 3: https://www.legislation.nsw.gov.au/#/view/regulation/2016/498/sch4