Inspections of old coal tips in Rhondda Cynon Taf have found further problems but nothing to suggest any movements have occurred.
That was the update the local authority gave residents following the landslide at the Llanwonno Tip in Tylorstown, Rhondda on Sunday.
Coal tips are categorised A-D based on risk with D being the highest level of risk.
Rhondda Cynon Taf council says all C and D tips are being assessed.
Earlier this week it was revealed the Llanwonno Tip at Tylorstown was a category D, meaning it was subject to three monthly monitoring which is undertaken by a walk-over survey against a set of criteria.
Independent inspections of other coal waste tips have found problems.
The Albion Tip in Cilfynydd near Pontypridd found some minor reactive works are required but the tip remains in a stable condition.
Engineers have done a walk over survey over the Ynyshir Tip finding water flow across the surface has created some scour but again no sign of movement.
Old disused coal tips where coal waste was once dumped are regulated by the Mines and Quarries (Tips) act 1969. The law places a duty on the land owner to monitor the tips. Some are in public hands while others are in private.
The Coal Authority is responsible for monitoring just a handful of sites in Wales including the Blaencwm Tip which is also being monitored.
Meanwhile monitoring is also talking place of a landslide behind the headquarters of Rhondda Cynon Taf council in Clydach Vale.
A number of local residents say that slide occurred on Sunday but I understand the council only knew about it after I shared an image of it on social media this morning. That led to council workers being evacuated as inspections took place to check the site was safe.
Rhondda Cynon Taf council says it expects the monitoring of all category C and D tips to conclude by the end of next week.