41. In this restoration she was rigged as a brigantine by Master Rigger Wally Buchanan. 42. It has the most riggers of any employer. 43. The term " rigger " may also be applied to others using these machines. 44. High above the main concert grounds, riggers atop metal poles assembled a lighting tower. 45. Tower cranes are operated by licensed riggers . 46. First launched in 1858 and was the world's oldest working square-rigger . 47. WLA is the most common process used by aerial riggers to assess and improve rigging. 48. Only carpenters trained as riggers are trusted to do rigging ( see fly crew ). 49. Purchasers are always advised to have any potential purchases examined by a qualified parachute rigger . 50. The airborne training is divided into Paratroopers Basic Training Course and Parachute Rigger Training Course.