...differing from those shown on the drawings or indicated in the specifications? or unknown conditions of an unusual nature differing materially from those...inhering in work of the character provided for in the plans and specifications, the attention of the contracting officer shall be called immediately...

...contractor encounter, or the Government discover, during the progress of the work, * * * unknown conditions of an unusual nature differing materially from those...as inhering in work of the character provided for 93 Reporter's Statement of the Case in the plans and specifications * * * the contract shall * * *...

...sheet piles, excavation and 571 Finding* of Fact driving steel H-beams because of unknown conditions of an unusual nature differing materially from those...recognized as inhering in work of the character provided in the plans and specifications within the meaning of Article 4, quotea in the statement of facts above....

...conditions encountered at the site differing materially from those indicated in the specifications, and from those ordinarily encountered and generally recognized...inhering in work of the character provided for in the plans and specifications. The facts upon which this claim is based have been known to the Bureau...

...These elements combined, during the spring thaw, to create a situation differing materially from that ordinarily encountered and generally recognized as inhering in work of the character provided for in the plans and specifications. 51. The elements listed in the preceding finding also combined to make...

...differing from those shown on the drawings or indicated in the specifications, or unknown conditions of an unusual nature differing materially from those...ordinarily encountered and generally recognized as being inherent in work of the character provided for in the plans and specificationSj the Contracting...

...differing from those shown on the drawings or indicated in the specifications, or unknown conditions of an unusual nature differing materially from those...ordinarily encountered and generally recognized as being inherent in work of the character provided for in the plans and specifications, the Contracting...

...differing from those shown on the drawings or indicated in the specifications, or unknown conditions of an unusual nature differing materially from those ordinarily encountered and generally recog84 Reporter's Statement of the t»»c nized as inhering in work of the character provided for...

...contract. The second part of art. 4 contemplated unknown subsurface conditions of an unusual nature and differing materially from those ordinarily encountered and generally recognized as inhering in the character of work called for, even though no representation had been made or indication given with...

...of the project which were not included as items of work in the original contract. b. Where there are subsurface or latent physical conditions at the site differing materially from those indicated in the contract beyond the limit of the Change Order. c. Where there are unknown physical conditinos at...