The first file on the slag block reuse market began with block origin tags, yard receipts and the reuse test cards. The city then checked the source, heard affected residents and sent a second office to repeat the count.
The current Year fifth, smelt run window 3 file records 40 blocks with a source and test result on the same tag; the previous window records 36. The longer sequence makes the change visible, while each count remains tied to its own dates.
A turning point was the observation that blocks from two cooling runs have different edge strength. It narrowed the discussion from a general claim to a question about how the rule works at the site.
The yard groups blocks by size. Masons want the cooling run and test result visible before purchase. The shared record is larger than it was at the start, although the parties still assign it different weight.
Anew work docket opens with a named machine, shift and measure. The Year fifth, smelt run window 3 file remains open for its scheduled decision. The cooperative will trial a source tag on each cooling run.
