The Sigil of the Fast Miner is a Sigil that, when activated using [Shift] and [ПКМ], will consume 100 LP every 5 seconds and apply the Haste potion effect. Thus, it increases your mining, digging, and cutting speeds. Crafted using the Mining Reagent and Reinforced Slate in an alchemy array.
Fast Miner Sigil Array
The Sigil of the Fast Miner's array, plus its primary uses.
As you have the Curios API installed, you can equip this Sigil as a charm. If you want to wear more curios at once, consider using a Sigil of Holding, or the Socketed Upgrade for your Living Armour.