Which one of the following best explains the ideal roles and interactions of the Onsite Tailings Manager and the Engineer of Record? which one of the following best explains the ideal roles and interactions of the onsite tailings manager and the engineer of record? Between them they should have the authority to recommend shut down of the TSF, if warranted Both should interact with the Designers, Third Party Reviewer, Independent Technical Review Board and Dam Safety Inspector Both must be experienced in detailed tailings management The Onsite Tailings Manager and Engineer of Record should interact up to monthly at critical stages, and meet onsite up to quarterly Both should be intimately familiar with the design, construction, operation, raising and closure of the tailings dam