Final answer:
The minimum fork extension into a pallet should be up to 15 diameters deep, according to newer safety recommendations, which exceeds the older rule of thumb of 7-8 diameters deep.
Step-by-step explanation:
The minimum distance the forks should extend into the pallet is typically informed by foundational safety principles in material handling and warehousing. An older 'rule of thumb' indicated that forks should extend 7-8 pallet diameters deep into the pallet. However, newer recommendations suggest a deeper penetration, with forklift forks extending as much as 15 diameters deep to ensure stability and safety when moving loads.
Adhering to these guidelines not only promotes workplace safety but also helps in preventing product damage during lifting and transporting.