The phrase "authorities at both" is correct and usable in written English.
It can be used when referring to the authorities or governing bodies of two different entities or locations.
Example: "The investigation was conducted by authorities at both the local and federal levels."
Alternatives: "authorities from both" or "officials at both".
He continued, "In light of the awful attacks in Boston, they will require extra vigilance from everyone involved and it is also to be hoped that everyone recognizes the added responsibility of cooperating with the police and the authorities at both events".
Though the European Society of Radiology is not a regulatory authority, by providing references and guidance documents, it can beneficially influence educational authorities at both a national and local level.
It also remains in constant contact with Brazil's civil defense authorities at both national and state levels to monitor the situation and recovery efforts.
However, the impact and sustainability of these achievements will be minimal and short-lived without increased commitment of Kenyan public health authorities at both the national and local level.
The most important collaborative partnerships for child rights in which the UNICEF CO is currently involved are those with central government ministries and local authorities at both country and communal levels.
The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1472-6939/15/43/prepub The authors gratefully acknowledge the participation of all the students in the study and the assistance provided by the authorities at both the public and private medical colleges.
Library lovers keen to defend their service from cuts have, over the past year, found themselves ridiculed, dismissed or ignored by those in positions of authority at both a local and national level, while also being treated to council doublespeak about the cutbacks of the kind recently denounced by Philip Pullman as sheer "political bullshit".
The victim called for those who were in positions of authority at both the school and police to stand up and take responsibility for not bringing Savile to justice.
His family said they have repeatedly contacted the authorities at Iran's judiciary both directly and through his lawyer but have not had much clarity on the exact reasons for his spying charges.
The apology follows a special meeting with members of both authorities at the county council earlier.
America gained a measure of moral authority both at home and around the world (which then directly aided and eased the way for its economic expansion both here and around the world) following World War II, but it was less about how we waged war, and more about how we waged peace thereafter.
