Union leaders have written to HSE chiefs urging them to publish initial findings into what caused the accident.
Unite said it will “lift the cloud of suspicion which currently hangs over” the crane operators and manufacturer Wolffkran Ltd.
The Enquirer revealed last week that the collapsed crane could take up to six months to clear.
Unite national officer for construction Jerry Swain said: “It is vital that the HSE ends the delay and publishes its initial findings into the reasons why a crane tragically collapsed in Bow in July.
“The HSE cannot be seen to be trying to sweep the investigation into this accident under the carpet. It is already nearly seven weeks since the accident occurred.
“The company concerned and the workers involved have a cloud of suspicion hanging over them and this is almost certainly unfair.
“Unite is the recognised union at Wolffkran. Our members are already having to operate in difficult conditions due to Covid-19 pandemic; it is simply unfair to have unanswered questions about this accident hanging over them.
“Equally, the only way the industry can learn from this tragedy and ensure it is prevented from happening again is if the HSE’s initial findings are published.
“If the HSE cannot publish their initial findings for any reason then they must publicly say why and what is causing that delay.”