The Northwest Ohio Region 1 USAR team and area firefighters trained in a retired mill facility that is slated for demolition.
We used an electric jackhammer on block walls and poured / rebar reinforced 5″ thick walls during several stations. The following are a few ways members of the team found to make life easier when using the tool.

Similar to the webbing tip above, except with a body cord and a prusik. This allowed easier vertical maneuvering.
The video below shows the technique.
[wpvideo a6n2gYOe]