There was no way he could, without explosives or heavy tools.
He found a heavy tool in the lowest level.
The adze is a heavy tool and can do a lot of damage.
Everywhere else the stone was firm and deep, impossible to attack without heavy tools.
The men dropped their work, seized heavy tools as weapons.
Some men had to carry heavy tools for over a mile.
The need for such a heavy tool is thus easily understood.
He found a heavy tool in the ship and demolished the motor.
"He could hurt himself with those heavy tools, you know."
It took several minutes of prying with a long, heavy tool to free them.