| Year | Operation Name | Number | Type | Opening | District | City | County | Company Name | Railroad Shipments (tons) | Railroad to Mine | Truck Shipments (tons) | Total Production (tons) | Days Worked | Employees | Notes |
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| 1883 | Filer | | Colliery | Slope | Eastern | Winton | Lackawanna | Grassy Island Coal Co. | 0 | DL&W 1 | 0 | 79,638 | 221 | 283 | | | 1884 | Grassy Island | | Colliery | Shaft | Eastern | Winton | Lackawanna | Grassy Island Coal Co., Limited | 0 | D&H Canal | 0 | 107,649 | 195 | 402 | | | 1885 | Grassy Island | | Colliery | Shaft / Tunnel | 1 | Winton | Lackawanna | Grassy Island Coal Co., Limited | 106,132 | D&H Canal | 0 | 109,096 | 177 | 344 | | | 1886 | Grassy Island | | Colliery | Shaft / Tunnel | 1 | Winton | Lackawanna | Grassy Island Coal Co., Limited | 85,214 | D&H Canal | 0 | 87,500 | 157 | 344 | | | 1887 | Grassy Island | | Colliery | Shaft / Tunnel | 1 | Winton | Lackawanna | Grassy Island Coal Co., Limited | 67,860 | | 0 | 70,048 | 158 | 327 | | | 1890 | Grassy Island | | Colliery | Shaft / Drift | 1 | Winton | Lackawanna | Grassy Island Coal Co., Limited | 9,600 | | 0 | 12,637 | 19 | 346 | | | 1891 | Grassy Island | | Colliery | Shaft / Drift | 2 | Winton | Lackawanna | Grassy Island Coal Co., Limited | 68 | | 0 | 2,582 | | 22 | Coal prepared and shipped from Racket Brook Breaker. | | 1945 | Grassy Island | | Mine | | 4 | | Lackawanna | Grassy Island Coal Co. | 1,610 | | 555 | 2,776 | 223 | 6 | Formerly operated by Esgro Coal Co. Run of mine coal. |
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