11. Harold Ridley benefitted from his own invention and the operational procedure he had pioneered. 12. The squadron followed the same operational procedures as No . 446, its sister squadron. 13. Operational procedures have been amended to minimise these risks.14. The test focuses on language proficiency, not operational procedures . 15. The company also modified its maintenance and operational procedures . 16. That often includes the hard-won knowledge of the operational procedures that provide the best results. 17. Consent was initially required for all operational procedures , either from the patients, their parent or guardian. 18. With two Merlin helicopters, Squadron 700M carried out trial modifications and developed tactics and operational procedure . 19. The explosion was caused by a drunk worker who violation operational procedures , ITAR-Tass said without elaboration. 20. Ultra high vacuum generally requires custom-built equipment, strict operational procedures , and a fair amount of trial-and-error.
