Work resumes on the Air Vent in Blaengwynfi after the Easter Holiday. The next week or so will see the removal of the old Concrete Cap, which will be replaced by a steel hatch. Work will be followed closely by the RTS and brought to you in Daily Bulletins on the days we are on site. Side Photos are from the exploratory work carried out by Hammonds a few months ago to see how thick the Concrete Cap is. Comments welcome.