(a) Proceedings.--
(1) The viewers may adjourn the proceedings from time to time. Upon request of the viewers or a party, the court which appointed the viewers shall issue a subpoena to testify or to produce books and documents.
(2) All the viewers shall act unless prevented by sickness or other unavoidable cause, but a majority of the viewers may hear, determine, act upon and report all matters relating to the view for which they were appointed.
(b) Construction.--The provisions of this section shall not be affected by the appointment of an alternate viewer as provided for in section 504 (relating to appointment of viewers).