60 C.L.R.]
OF AUSTRALIA. the ground that an undue strain was placed upon them. The award did not limit the quantity or weight of the cargo to be placed in slings or other appliances, nor did it expressly limit the weight of lead bars that were to be handled. But the award provided that
any refusal to carry out the reasonable instructions of the employer or his representative as to the quantity or weight of cargo to be placed in slings or other appliances
shall be deemed to be a breach of this award by the individual workman concerned."
The magistrate rejected medical evidence submitted on behalf of the applicants with the object of showing that the practice of placing thirty-five bars of lead into a sling involved undue strain.
The evidence showed that a complaint was made in relation to the loading of the S.S. Cambridge on 2nd September 1937, when the board of reference constituted under the award considered a claim by the applicants' union for extra men to unload bars of lead. The extra men were required because, it was stated, the loading of thirty- five bars to a sling involved undue strain. The board of reference examined the matter, and the decision of the board was against the contention of the union.
On 17th November 1937, that is, a week after the alleged offences had been committed, the union again complained to the board of reference, and, upon a further investigation, the board decided that the employer's instructions to place thirty-five bars into the slings should be carried out and did not impose undue strain upon the men.
The magistrate convicted the applicants, taking the view that the real question involved was a question whether the placing of thirty- five bars of lead into a sling involved undue strain, and that this question had been conclusively determined as between the parties by the board of reference. The applicants were ordered to pay the amount of their respective fines and the costs of the informant to the informant.
Each of the applicants obtained from McTiernan J. an order nisi by which it was ordered that the informant and the magistrate show cause why, on the various grounds therein stated, a writ of prohibition should not be issued directed to each of them to restrain them and each of them from further proceeding on or in respect of the adjudi- cation or order made by the magistrate.