Located south of the original Locust Gap Colliery. In 1869, Graber, Kembel & Sheff sunk the slope 450 ft. in the second basin on the south dip mammoth vein and in 1872, sunk the pump slope 150 ft. east of the main slope.
In 1875, the breaker was destroyed by fire which caused a suspension until a new breaker was completed in 1876.
In 1882, they sank the pump slope 330 ft. to the second level continuing operations until 1883, when they sold the colliery to the Philadelphia & Reading Coal & Iron Co. On Feb.1, 1883 who started making improvements. The old pole pump was replaced by a new and larger pump, the old worn out boilers were replaced by eight new ones and the upper part of the pump slope was retimbered. During the same year the skidmore vein was developed by driving a tunnel 310 ft. from the slope level.
In 1889, the hoisting slope was extended 339 ft. to the second level and the 18 in. cylinders on the hoisting engines were replaced by 22 in. ones.
In 1890, the pump slope was enlarged to a distance of 750 ft. from a single to a double track hoist.
In 1899, a large breaker was erected to take the place of the Locust spring, Locust Gap, and Monitor Collieries Breakers that were all abandoned. These 3 collieries were then consolidated and all coal was prepared at the New Locust Gap Breaker.
In 1903-4, the P&R C&I Co. sunk the west slope 1200 ft. on the south dip mammoth vein and later in 1905 extended it 600 ft., a total length of 1800 ft. The slope operated eight seperate levels.
On May 5,1904, a fire was discovered in both the old slopes and airway. Five men were trapped inside and it was found impossible to reach them. The fire had originated in the pump way while the group of men were timbering it. The company did all in their power to recover the bodies of the men before slushing the mine. After 18 months, the fire was extinguished and the slopes that were slushed were reopened and retimbered to the second level. In 1905 the colliery resumed work.
In 1907, the western buck mountain slope was sunk 630 ft.
The total shipments from the New Locust Gap Colliery as of 1928 was 9,169,588 tons. Tonnage from 1905 to 1916 included the locust spring shipments.