Occupation: Derrick Operators, Oil and Gas
Task: Start pumps that circulate mud through drill pipes and boreholes to cool drill bits and flush out drill cuttings.

Scale: Frequency of Task (Categories 1-7)
Category: 1
Value: 0 (N=66)
Source: Incumbent, 06/2006

Scale: Frequency of Task (Categories 1-7)
Category: 2
Value: 1.55 (N=66)
Source: Incumbent, 06/2006

Scale: Frequency of Task (Categories 1-7)
Category: 3
Value: 9.52 (N=66)
Source: Incumbent, 06/2006

Scale: Frequency of Task (Categories 1-7)
Category: 4
Value: 16.34 (N=66)
Source: Incumbent, 06/2006

Scale: Frequency of Task (Categories 1-7)
Category: 5
Value: 43.25 (N=66)
Source: Incumbent, 06/2006

Scale: Frequency of Task (Categories 1-7)
Category: 6
Value: 14.87 (N=66)
Source: Incumbent, 06/2006

Scale: Frequency of Task (Categories 1-7)
Category: 7
Value: 14.47 (N=66)
Source: Incumbent, 06/2006

Scale: Importance
Value: 4.23 (N=72)
Source: Incumbent, 06/2006

Scale: Relevance of Task
Value: 90.3 (N=78)
Source: Incumbent, 06/2006