The entire exmateria.au website is copyright ©2023 by ExMateria. All rights reserved. The exmateria.au site may not be copied or duplicated in whole or part by any means without express prior agreement in writing or unless specifically noted on the site. Some photographs or documents contained on the site may be the copyrighted property of others; acknowledgement of those copyrights is hereby given. All such material is used with the permission of the owner.