Fuel ID: (England) | 7 |
Fuel ID: (Wal, Scot & NI) | 7 |
Fuel name | Black Diamond Gem briquettes |
Manufacturer | Coal Products Limited at Immingham Briquetting Works, Immingham, North East Lincolnshire |
(a) | comprise anthracite duff (as to 20 to 30% of the total weight), petroleum coke (as to 40 to 45% of the total weight), bituminous coal (as to 12 to 22% of the total weight) and molasses and phosphoric acid binder (as to the remaining weight) |
(b) | were manufactured from those constituents by a process involving roll-pressing and heat treatment at about 300°C |
(c) | are pillow-shaped briquettes marked with two parallel indented lines running latitudinally around the briquette |
(d) | have an average weight of 160 grams per briquette |
(e) | have a sulphur content not exceeding 1.5% of the total weight. |
England Status Date first authorised |
Authorised (Black Diamond Gem briquettes)
1900-01-01 00:00:00 |
Wales Status Date first authorised |
Authorised (Black Diamond Gem briquettes)
1900-02-01 00:00:00 |
Scotland Status Date first authorised |
Authorised (Black Diamond Gem briquettes)
1900-02-01 00:00:00 |
N. Ireland Status Date first authorised |
Authorised (Black Diamond Gem briquettes)
1900-04-01 00:00:00 |
Black Diamond Gem briquettes
Available information about this fuel is shown below: