First pass on porting Baymining. Compiles, not playable, do not merge alone.

code/modules/mining/ore_datum.dm

@@ -0,0 +1,52 @@
+/datum/ore
+	var/oretag
+	var/alloy
+	var/smelts_to
+	var/compresses_to
+
+/datum/ore/uranium
+	smelts_to = /obj/item/stack/sheet/mineral/uranium
+	oretag = "uranium"
+
+/datum/ore/iron
+	smelts_to = /obj/item/stack/sheet/mineral/iron
+	alloy = 1
+	oretag = "hematite"
+
+/datum/ore/coal
+	smelts_to = /obj/item/stack/sheet/mineral/plastic
+	alloy = 1
+	oretag = "coal"
+
+/datum/ore/glass
+	smelts_to = /obj/item/stack/sheet/glass
+	compresses_to = /obj/item/stack/sheet/mineral/sandstone
+	oretag = "sand"
+
+/datum/ore/phoron
+	//smelts_to = something that explodes violently on the conveyor, huhuhuhu
+	compresses_to = /obj/item/stack/sheet/mineral/phoron
+	oretag = "phoron"
+
+/datum/ore/silver
+	smelts_to = /obj/item/stack/sheet/mineral/silver
+	oretag = "silver"
+
+/datum/ore/gold
+	smelts_to = /obj/item/stack/sheet/mineral/gold
+	oretag = "gold"
+
+/datum/ore/diamond
+	compresses_to = /obj/item/stack/sheet/mineral/diamond
+	oretag = "diamond"
+
+/datum/ore/osmium
+	smelts_to = /obj/item/stack/sheet/mineral/platinum
+	compresses_to = /obj/item/stack/sheet/mineral/osmium
+	alloy = 1
+	oretag = "platinum"
+
+/datum/ore/hydrogen
+	smelts_to = /obj/item/stack/sheet/mineral/tritium
+	compresses_to = /obj/item/stack/sheet/mineral/mhydrogen
+	oretag = "hydrogen"