ECS Basic Vector II. Coal Mine
Coal Mine
Coal Mine
Drawn by Zimmlock
Graphics improvement and CC support by George
General data
Coal mines produce coal. If coal is not transported, the coal mine will produce 5-10 tons of coal. In all other cases production depends upon the production level represented as the number (up to 128, the ultimate production level), multiplied by 8 when no machinery is waiting, by 20 when at least 1 machinery unit is waiting, by 12 when machinery is undefined.
This way the coal mine will support a smooth production level.
At the highest production level, 8 units of machinery are processed per month. With every level below this, the amount of processed machinery units is halved (down to the lowest production level of 1 machinery unit during 4 months). A coal mine cannot be built by a player.
Coal mines support company colours.
Coal body and reserves
Every coal mine has a fixed coal body randomly predetermined during the construction phase at between 100Kt and 1100Kt. The size of the coal body is unknown to the player. At the beginning, the mine sees a reserve of 10 to 30% of the coal body. When the amount of coal transported is above 75% a month, new reserves of coal may be found, increasing the known reserves by +10% to +30%, but reserves may never exceed the predetermined coal body.
When the mine plans to exhaust all the reserves within 24 or 12 months, it generates a warning.
Production change
Changing production level depends on the amount of cargo transported. If less than 60% of produced cargo is transported, production goes down, while if more than 85% is transported, it goes up with 12.5% probability, and goes up smoothly in the other case.
For values 60% - 75% and 75% - 85% a smooth production change is applied which means production levels change by -1 and +1 respectively. Currently the smooth production change only works in OTTD.
When all of the known coal body has been extracted, the coal mine closes immediately.
Coal mine uses advanced closure mechanism when: it is at least 10 years old, it is not the last one on the map, it has the lowest production level, transportation level is below 75%.
Stockpile size
Cargo acceptance is limited by storage capacity. If the stockpile is in overflow, the industry stops accepting cargo until the stockpile is down to 50% of capacity, at which point the industry will start accepting cargo again.
||Level|Machinery|Machinery (50%)
Very low|171|85
Low|245|122
Normal|350|175
High|501|250
Very high|716|358
Ultimate|1023|511||
Possible locations
Coal mines should be built on flat land far from towns (Rz0 + 6 < Ed). They can't be built near other coal mines, power plants, glass works, steel mills.
Specials
Coal mine has special "Mammoth" layout, that has 1.5 times higher capacity and output.
