I once told Don Blair I thought I could tell when to retire a line that had always been used in natural crotches by the visible wear, but I asked, “How do you know when to retire a line that [...]

Urban rigging is, essentially, tight-quarters rigging. While you can find this scenario anywhere trees need to be worked on in close proximity to structures, it is nearly the norm in urban environments, from the street trees that have found a [...]