Denis Condon (Engineer) Mob: 0418 578 042 Business Address: 184 Beach Road, Mordialloc, VIC 3195 e-mail: denis@openspace.com.au Peter Markus (Engineer)   Mob: 0417 053 078 Business Address: 90 Anglesea Road, Waurn Ponds, VIC 3216 e-mail: peter@openspace.com.au