Statistics: Concrete Stoppings in Coal Mines for Resisting Explosions: Detailed Tests of Typical Stoppings and Strength of Coal as a Buttress
Context
Usage by Month/Year
| Year | January | February | March | April | May | June | July | August | September | October | November | December | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | 0 | 0 | 0 | 1 | 16 | 0 | 0 | 17 | |||||
| 2023 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 2 |
| 2022 | 1 | 2 | 2 | 3 | 1 | 2 | 0 | 0 | 1 | 6 | 7 | 1 | 26 |
| 2021 | 2 | 7 | 4 | 3 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 19 |
| 2020 | 3 | 3 | 4 | 0 | 2 | 1 | 5 | 1 | 0 | 2 | 2 | 3 | 26 |
| 2019 | 3 | 1 | 0 | 4 | 1 | 0 | 1 | 2 | 1 | 3 | 0 | 0 | 16 |
| 2018 | 2 | 3 | 4 | 3 | 0 | 0 | 0 | 3 | 9 | 13 | 1 | 6 | 44 |
| 2017 | 0 | 0 | 2 | 1 | 2 | 3 | 2 | 1 | 1 | 3 | 0 | 0 | 15 |
| 2016 | 3 | 2 | 4 | 0 | 1 | 1 | 1 | 2 | 1 | 3 | 1 | 0 | 19 |
| 2015 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 3 |
| 2014 | 2 | 4 | 0 | 0 | 1 | 0 | 4 | 0 | 4 | 0 | 0 | 0 | 15 |
| 2013 | 3 | 0 | 3 | 4 | 1 | 0 | 2 | 1 | 1 | 1 | 3 | 0 | 19 |
| 2012 | 0 | 1 | 0 | 0 | 1 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 6 |
| 2011 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 5 |
| 2010 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |