Rubuta ci gaba ga wannan sakin layi - A ƙarshe an dakatar da hakar ma'adinai a tsakiyar shekarun 1980, bayan da ya jimre har zuwa shekarar 1926 Babban yajin aiki na United Kingdom
, 1930s Depression da kuma yakin basasa na bayan yakin, amma ya zama ba zai yiwu ba bayan yakin basasa na Birtaniya (1984-1985), tare da Cibiyar ta zama kulob din shan giya.