Hardhat in a can.
Are you thinking of Simple Sabotage?
https://en.wikipedia.org/wiki/Simple_Sabotage_Field_Manual
This site is fun and more modern:
SIMPLE SABOTAGE FOR THE 21ST CENTURY
Hardhat in a can.
Are you thinking of Simple Sabotage?
https://en.wikipedia.org/wiki/Simple_Sabotage_Field_Manual
This site is fun and more modern:
SIMPLE SABOTAGE FOR THE 21ST CENTURY