In all circumstances, the applicant is advised to contact the Welsh Government as soon as an application is submitted to the Coal Authority to discuss the approval process:
Ym mhob achos, cynghorir yr ymgeisydd i gysylltu â Llywodraeth Cymru i drafod y broses gymeradwyo cyn gynted ag y bydd wedi cyflwyno cais i’r Awdurdod Glo: