Which preposition to use with exhumation

at Occurrences 1%

Three junior performers received ten guineas a day apiece: one of them held a watching brief for the Dean and Chapter of the Abbey, who, being members of a Christian fraternity, were pained and horrified by the defendants' implication that they had given interment to a valet, and who were determined to resist exhumation at all hazards.

Which preposition to use with  exhumation