Tip 4 at Aberfan, which had been used between 1933 and 1945, was large, and had been started on boggy ground between two streams.
كان الطرف رقم 4 في أبرفان ، والذي كان مستخدمًا بين عامي 1933 و 1945 ، كبيرًا ، وكان قد بدأ على الأرض الموحلة بين مجرىين.