pitch

A pitch is a defined area of ore body assigned to an individual miner or small team working on tribute or share basis. The miner extracts ore from this bounded section and receives payment based on tonnage or value of material recovered, rather than a day wage. The pitch boundary is marked physically on the ground or rock face, often with paint, carved lines, or wooden pegs, so disputes over territory do not interrupt production.

The size and location of a pitch depends on geology and ore grade. A miner working a high-grade vein might receive a smaller area; a low-grade section demands more ground to yield viable returns. In hard rock mining, pitches may be stacked vertically in different levels of the same shaft or drift. In alluvial or placer operations, pitches are often measured in linear feet along a stream or face.

Variants and payment structures

The pitch system was most common in older tin and copper workings, particularly in Cornwall and other historic mining regions. A miner might work his pitch under direct employment (receiving a share of ore value after deduction of smelting costs) or as an independent tributer, where he kept a percentage of the sale price after the mine owner took their cut. Some operations assigned pitches by lottery each season to prevent favouritism; others were held long-term by skilled miners whose families worked the same ground across generations.

Modern hard rock mines rarely use formal pitch allocation in the traditional sense, instead organising extraction by ore reserve blocks and shift-based face advance. However, informal pitch systems persist in artisanal and small-scale mining, where a digger or panner claims a river section or claim area and works it without direct supervision. The pitch remains valuable language in legal mining records, contract agreements, and historical mining surveying.

The term derives from old French piche, meaning to mark or assign, and reflects the practicality of dividing underground space when ore bodies are thin, scattered, or difficult to value in advance. A miner working a pitch bore most of the risk: if the ore pinched out or grade fell, his income fell with it, making pitch-work a form of mining labour that attracted only experienced, confident workers willing to gamble on geology.