Below is an extract from the Royal Commission in 1886 where the commissioners chatted with the manager of Ferndale Colliery;
65. You have worked the coal under the Maitland Road, I believe? Yes.
66.. What depth is the coal from the surface under that road? It is about 1.5 feet from the surface down to the roof of the coal.
67. Of what rock is the roof composed ? Soft past.
68. And to the south -west of the Maitland Road, what is the depth of the coal ? It crops out just beyond the Maitland Road.
69. In that swampy hollow formed by the elbow of. Tighe’s Creek, is the coal found? Yes, it is found in the swampy hollow at Tighe’s Cheek.
70. Then, between the Ferndale workings the outcrops to the south-vest of the Maitland Road, has the coal been worked by other parties ? It was last worked by Mr Bevan, and by Chas. Austin, and several small owners.
71. Are the workings of these small collieries connected with those of Ferndale? Yes.
72. Were any barriers left between them ? I left a barrier of coal between Tighe’s Hill and Peppertown.
73. But in these little collieries that you have spoken of, do you know what Was the nature of the surface deposits above the coal -seam ? It was clay and conglomerate, and in the crop it would be mostly composed of this rotten post, with a body of clay on the top of it.
74. Do you know whether these surface deposits gave these owners any trouble? I do not think so.
75. Was the surface of the crop-workings covered by the tide in that position ? No.
76. Have the pillars in these collieries been taken out? Yes we took out all the pillars in Peppertown.
77. But I am now speaking of these little collieries? ‐ Yes the pillars were taken out.
78. Did they take them out to the very crop? Yes, they took all they could.
79. Then these collieries being connected with Ferndale, will now be drowned out? ‐ Yes; every one of them.
86. On looking at your tracing of the plan, the coal workings are represented to terminate abruptly and follow a curved line,‐does this curved line represent the position of the outcrop?‐ Yes.
87. This is where the coal has become lost in the level deposits? Yes.
91. And did the surface come down and cut out the conglomerate? Yes.
92. Then in that case what was in front of the coal seam? Sand and clay.
96. Towards the crop, did the conglomerate give place to sand suddenly or gradually? Sometimes there would be a portion of post in it. Sometimes it would be 6 or 7 inches, and in others as high as a foot, and cut out the conglomerate.
97. When you struck the surface deposits to the north‐west and north, did these deposits give you any trouble? Only in one portion of the mine.
98/99. Have you taken out the whole of the pillars in this section? …. I mean that section to the west? We have taken out all the pillars to the west of Waratah Railway, excepting under the Maitland Road.
100. Did you experience any difficulty from the surface in doing so? No.
101. What measures did you take to prevent it filling up the workings? We took no measures at all. We took the pillars out and let it fall.
102. Was there any surface‐water? None whatever.
103. Contiguous to the shaft I believe you experienced some difficulty from “cave‐in” Did it give you some trouble? Yes.
104. Would you tell us about it? In the flat of Tighe’s Hill, in four different places, the roof fell in, and worked out to the crop, so that there was no covering to support the crop, and we had to construct a dam to keep the water back.
105. Did any water come in along with the sand? Yes; a considerable quantity came in, but we made these dams, and kept it back.
106. I understand this part of the workings is above tidal influence? Yes; But there is a great body of water in the sand, down about 15 feet.
119. Had you any considerable growth in water from the Ferndale workings? Yes.
120. Where did the water come from? From a flat in the old workings to the west of Ferndale shaft.
121. How much water did you get? We were pumping in No8 16,000 gals. an hour.
161, And you have told us that you pumped 16,000 gallons an hour from that pit ‐ was the water fresh or salt? It was salt water.
162. Where did it come from? Principally from the hard roof of conglomerate.