[82] In July 1967 Defence Secretary Denis Healey announced that Britain would abandon her mainland bases East of Suez by 1977, although airmobile forces would be retained which could if necessary be deployed in the region
The MOHMQuit (Midwives and Obstetricians Helping Mothers to Quit Smoking) Trial: protocol for a stepped-wedge implementation trial to improve best practice smoking cessation support in public antenatal care services Larisa Barnes, Jo Longman, Catherine Adams, Christine Paul, Lou Atkins, Billie Bonevski, Aaron Cashmore, Laura Twyman, Ross Bailie, Alison Pearce, Daniel Barker, Andrew Milat, Julie Dorling, Michael Nicholl, Megan Passey Implementation Science 30
The Labour governments 19641970 volume 2: International policy (2008)
Replace it if any of the following happen: It gets dirty, wet, or damaged It feels harder to breathe through It no longer seals well on your face Bottom line: reuse is OK shortterm if the mask stays clean and seals well, but swap it out when performance drops
