Related Clues:

• Out-of-the-office detective duty
• Jobs done out of the office
• *Tedious detective duty
• Cyclist is propelled by this slog
• Tasks that involve much travelling
• Hard slog needed to prove effective on stage?
• Laborious effort involving much travelling
• Support Labour -- it's a hard slog
• Set up pan with a bit of rice in and grind
• Hard graft
• Investigator's data gathering
• Tiring and tedious gathering of basic information etc
• Old-fashioned investigation
• Long and tedious effort involved in gathering basic information
• Preparatory effort