A number of wildfires have been burning on Oregon Department of Forestry protected lands, including a couple in north-central Oregon.  The 21-acre Smith Hollow Fire is burning in grass and brush near Fossil but is 100 percent lined.   Cause is under investigation.   The 700-acre lightning-caused Harper Complex Fire is burning in timber, brush and grass about 8 miles southwest of John Day.  Approximately 10 residents are threatened.   A local Type 3 Team has been assigned to the Harper Complex.   And the Sugar Loaf Fire was reported is burning in grass and timber in central Oregon on BLM land 9 miles north of Dayville.   One outbuilding has been destroyed and 12 residences are threatened.   Fire size is estimated at 4,095 acres.