Drill Rod |
Depth |
Time |
Remarks |
1 |
(1.5m) |
10 min |
No spring tension required |
2 |
(3m) |
15 min |
No spring tension required |
3 |
(4.5m) |
10 min |
Slight spring tension used |
4 |
(6m) |
15 min |
Slight spring tension used |
5 |
(7.5m) |
20 min |
Slight spring tension used |
6 |
(9m) |
10 min |
Slight spring tension used |
7 |
(10.5m) |
15 min |
Slight spring tension used |
8 |
(12m) |
20 min |
Slight spring tension used |
9 |
(13.5m) |
15 min |
Half spring tension used |
10 |
(15m) |
15 min |
Half spring tension used |
11 |
(16.5m) |
20 min |
Half spring tension used |
12 |
(18m) |
25 min |
Full spring tension used |
13 |
(19.5m) |
20 min |
Full spring tension used |
14 |
(21m) |
20 min |
Half spring tension used |
15 |
(22.5m) |
25 min |
Slight spring tension used |
16 |
(24m) |
20 min |
Slight spring tension used |
17 |
(25.5m) |
15 min |
Slight spring tension used |
18 |
(27m) |
15 min |
Slight spring tension used |
19 |
(28.5m) |
20 min |
Slight spring tension used |
20 |
(30m) |
20 min |
Slight spring tension used |