...shall be imposed upon the seller for each laborer or mechanic for every calendar day for which such employee is required or permitted to labor more than...upon said work, and all penalties thus imposed shall be withheld for the use and benefit of the buyer; provided that no penalty shall be exacted in case...

...penalty of $5 shall be imposed for each laborer or mechanic for every calendar day in which he shall be required or permitted to labor more than eight hours upon said work, and the amount of any such penalties shall be withheld for the use and benefit of the Government from any...

...shall be imposed upon the contractor 1'or each laborer or mechanic for every calendar day in which such employee is required or permitted to labor more than...upon said work, and all penalties thus imposed shall be withheld for the use and benefit of the United States ; provided, that no penalty shall be exacted...

...each violation of the requirements of this article M penalty of five dollars shall b« imposed ujxm the contractor for each laborer or mechanic for every calendar day in which such employee is required or permitted to labor more than eight hours upon .said work, and all penalties...

...so far as it may violation of the requirements of this article a penalty (if five dollars shall l>e imposed upon the contractor for each laborer or mechanic for every calendar iluy in which such employee is required or permitted to labor more than eight hours upon said work,...

...such contract of five dollars for each laborer or mechanic for every calendar day in which he shall be required or permitted to labor more than eight hours upon said work ; and any officer or person designated as inspector of the work to be performed under any such contract,...

...such contract of Five Dollars for each laborer or mechanic for every calendar day in which he shall be required or permitted to labor more than eight hours, upon said work, and any officer or person designated as inspector of the said work to be performed under such contract...

...provision in such contract of $5 for each laborer or mechanic for every calendar day in which he shall be required or permitted to labor more than eight hours upon said work ; and any officer or person designated as inspector of the work to be performed under such contract, or to...

...contracts of flve dollars for each laborer or mechanic for every calendar day in which he shall be required or permitted to labor more than eight hours upon said work ; and any officer or person designated as inspector of the work to be performed under any such contract,...

...relation thereto, the sum of $5 for each laborer or mechanic for every calendar day in which shall be required or permitted to labor more than eight hours upon said work, but this provision shall be subject to the exceptions contained in section 2 of the eight hour law,...