Pay-dirt - OSRS Wiki

Pay-dirt is obtained whilst mining ore veins within the Motherlode Mine. Mining pay-dirt grants 60 (up to 61.5 with full prospector outfit) Mining experience and requires a minimum Mining level of 30. Pay-dirt can be cleaned by depositing them into the hopper in the centre of the mine. Once cleaned players must search a sack to claim their ores, which is dependent on the player's Mining level. Pay-dirt cannot be deposited in the bank.

Mining, Old School RuneScape Wiki

Pay-to-play Mining training - OSRS Wiki

this has gotten out of hand : r/2007scape

Clay rocks - OSRS Wiki

Lletya bank - OSRS Wiki

1.2.14 Release - RuneLite

Loot from 1 full inventory of Pay Dirt (Motherlode Mine) at 99 Mining. : r/2007scape

Prospector Percy - OSRS Wiki

Small Boulder - OSRS Wiki

Pay-to-play Mining training, Old School RuneScape Wiki

An average of 14.9m pay dirt is mined and cleaned every day in @OldSchoolRS #RuneStats : r/2007scape