add. ·- a stratum of oil sand thick enough to make a well pay.
2. pay streak ·add. ·- the zone, parallel to the walls of a vein, in which the ore is concentrated, or any narrow streak of paying ore in less valuable material.
add. ·- a stratum of oil sand thick enough to make a well pay.
2. pay streak ·add. ·- the zone, parallel to the walls of a vein, in which the ore is concentrated, or any narrow streak of paying ore in less valuable material.
Webster English vocab. Английский словарь Webster. 2012