APPENDIX 3. TIME STUDY DATA FOR EXTRACTION OPERATIONS

Conventional logging system Sample unit Plot/01
Work elements	%	Classification	%		%
Attach log - cable (MW)	12.76	Main work Time (MW)	50.56	Work	98.63
Winching (MW)	2.36			Time
Skidding (MW)	29.02			(WT)
Unhook (MW)	4.08
Landing operation (MW)	2.34
Location of logs (CW)	34.25	Complementary Work Time (CW)	34.25
		Productive Work Time (PW)	84.81
Instructions / cruising (PL)	9.95	Preparatory Time (PT)	12.08
Considerations (OP)	2.12
Repair time (RT)	0.00	Service Time (ST)	0.96
Maintenance time (MT)	0.96
Refuel time (RF)
Injuries / visitors etc. (DT)	0.78	Disturbance Time (DT)	0.78
		Supportive Work Time (SW)	13.82
Rest time (RP)	1.13	Work-Related Delay Time (WD)	1.37	Non-	1.37
Personal time (RP)	0.23			Work
Delays (IT)	0.00			Time
				(NT)
Workplace Time (WP)					100.00
The total workplace time observed (excluding meal time) amounted to 6 h 54 min 34 sec.

Planned harvesting system Sample unit Plot/02
Work elements	%	Classification	%		%
Attach log - grapple (MW)	6.06	Main work Time (MW)	53.84	Work	98.73
Winching (MW)	3.55			Time
Skidding (MW)	34.84			(WT)
Unhook (MW)	5.19
Landing operation (MW)	4.20
Location of logs (CW)	32.61	Complementary Work Time (CW)	32.61
		Productive Work Time (PW)	86.45
Instructions (PL)	0.00	Preparatory Time (PT)	0.28
Considerations (OP)	0.28
Repair time (RT)	7.33	Service Time (ST)	7.55
Maintenance time (MT)	0.22
Refuel time (RF)	0.00
Others (AW)	1.83	Ancillary Work Time (AW)	4.24
Blading marked skidtrail (AW)	2.42
Injuries / visitors etc. (DT)	0.21	Disturbance Time (DT)	0.21
		Supportive Work Time (SW)	12.28
Rest time (RP)	1.27	Work-Related Delay Time (WD)	1.27	Non-	1.27
Personal time (RP)	0.00			Work
Delays (IT)				Time
				(NT)
Workplace Time (WP)					100.00
The total workplace time observed (excluding meal time) amounted to 6 h 01 min 57 sec.