The original is not required, and other evidence of the contents of a writing, recording or photograph is admissible when:\n(1) All originals are lost or have been destroyed, unless the proponent lost or destroyed them in bad faith;\n(2) An original cannot be obtained by any available judicial process or procedure;\n(3) At a time when an original was under the control of the party against whom offered, that party was put on notice, by the pleadings or otherwise, that the contents would be a subject of proof at the hearing, and the party does not produce the original at the hearing; or\n(4) The writing, recording or photograph is not closely related to a controlling issue. [1981 c.892 §74]
Oregon Legal Code