PowerMachines - It’s About Excavators

I came across a good resource on construction equipment and the site is known as Ritchiewiki.com. sounds like “Richie Rich” but not at all as the collection is very comprehensive with a large collection of articles on heavy equipment.
A little bit about this wiki site ( as extracted from the site)
RitchieWiki is a wiki website [...]

This is an excavator in action, excavating a one level basement. The temporary retaining wall is made up of sheet piles, which is installed by a second excavator ( the one on a higher level) as it is modified with a vibratory clamp to install sheet piles.
Here is photo taken.

The lower excavator is the [...]