Title |
Development - Land settlement - Conservation and environment - A new technique in land clearing in use at the new town site of Rock Gully, in the south of Western Australia - A 5/8 inch reinforced steel ball eight feet in diameter and weighing five tons is dragged on a 200 foot chain behind two bulldozers - The chain has two inch links and weighs eight tons - A third bulldozer follows the ball to add weight against particularly tough trees - In lightly timbered country the 'hi-ball' method clears 100 acres a day, in heavier timber 60 - The timber is bulldozed into windrows, left to dry for a year and burned - The ground is smoothed by dragging a triple chain across CATEGORY: photograph FORMAT: b&w negative TYPE: cellulose acetate STATUS: preservation material |
Contents date range |
1959 - 1959 |
Series number |
A1200
Click to see which government agency or person created this item. |
Control symbol |
L30616 |
Citation |
NAA: A1200, L30616 |
Item ID |
11167701 |
Location |
Canberra |
Access status |
Open |
Physical format |
PHOTOGRAPHS (allocated at series level) |
Visibility and availability indicators |
76. Item charge: Photographic
|
| Keyword headings |
- CONSERVATION AND ENVIRONMENT
|
Records authority class number |
1012942 |
Date registered |
22 Oct 1994 |
|