Thank you for your comment!
I'm happy you ask:

1. It's rather rough: a 50 cm broad part of the bark is cut off the trunk diagonally. Looks like a flag and goes half-way around the trunk. It's just deep enough to reach the certain vessels which produce the fluid while the other parts remain intact and the tree keeps growing. In this photo you properly see the cut - this one goes all around the trunk though. The tree starts bleeding and the fluid flows along the lower remains of the bark until it reaches the metal drain you see in the upper right. Simply hammered into the tree.
2. The fluid dripping out is natural latex.

Oh, yeah. I'm happy I'm still alive and that you apparently are as well. :)