Schematic for a landmine

A printed schematic showing how to build something.
It tells you how to make a landmine with the following components: 
*1 - Firing pin assembly
*1 - Piezoelectric ignition circuit
*1 - Pipe bomb
*1 - Relay
*1 - Broken Battery Pack
Making this would take some familiarity with craft.
In the upper right corner is a note: "First discovered by Dr. Nous"