As the former majority union, the NUM now falls very short of representing enough works to allow it organisational rights at the platinum mine.
If the platinum miner disputes the action, the union may bring an urgent application before the labour court.
Amcu has threatened to serve a 48-hour strike notice if they don't get what they want by Wednesday, but Lonmin says an agreement can be reached.
The largest labor union at Lonmin will serve a 48-hour strike notice if an agreement is not reached on recognising it as the majority union.
The National Union of Mineworkers is up against the wall as it cries conspiracy since eight of its members have been suspended over fraud allegations.
Deadly rivalry between the two unions at the Lonmin mine was further stoked after eight workers were suspended over alleged union membership fraud.
Lonmin has back-pedalled on its agreement to give the NUM until July to vacate its Marikana offices, pushing the deadline up to May 31.
Lonmin has appointed Anglo American Platinum's Ben Magara as its new chief executive as it strives to rebound from last year's wave of deadly strikes.
The Farlam commission of inquiry has made an appeal to the media to hand over any unseen footage of the August 16 shooting at Marikana, North West.
Lonmin says it's trying to change, but union infighting continues to plague the mine.
Despite a strong recovery from last year's Marikana tragedy, tension between labour unions Amcu and NUM hinder Lonmin platinum mine's output levels.
Workers at Lonmin's Saffy and Newman shafts in Marikana have stopped working in the largest single strike since the shooting at the mine last year.
Cyril Ramaphosa is quitting the boards of paper-maker Mondi and platinum producer Lonmin to prevent conflicts with his new political role.
The legal team for 270 miners who were arrested and injured during a shooting at the Marikana mine are running low on funds, it has been reported.
Telling the real story behind the shocking killings on the koppie of Lonmin's Marikana mine was never going to be easy, writes Kwanele Sosibo.
The circumstances surrounding Lonmin worker, Marvellous Mpofana's death have led to rumours of murder, writes Kwanele Sosibo.
The Bapo Ba Mogale community claims that the mining giant Lonmin has fudged its profits and owes them millions in royalties, writes Heidi Swart.
The Farlam commission has revealed that the claim for R12 500 originated in extra-union bargaining. Kwanele Sosibo reports.
Labour unrest at Lonmin Platinum was connected to the company's contemplated restructuring, which could include retrenchments, the company has said.