Assertion: blast furnace | /r/AtLocation | operation
Facets:
value: between 1871
type: TEMPORAL
value: between 1903
type: TEMPORAL
Source sentences:
text: Blast furnace owned by Hrlicko – tapolcsánska company was in operation between 1871 and 1903.
text: When the blast furnace is in operation, the taphole is completely filled with a refractory material known as the taphole mass.