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The mechanics of closure, exhibited by ice tunnels, can be understood by considering the ice as a viscous solid. The viscous solid will flow, when subjected to a force, at a rate dependent on the magnitude of the force, the area of relief open for flow, and the apparent viscosity of the viscous solid. In the case of the ice tunnels, the force inducing the flow is the weight of the overburden; the area of relief open for flow is the tunnel opening; and apparent viscosity is the resistance to flow exhibited by the ice. The closure of a rectangular opening made in ice was measured. Maximum closure occurs at the center of unsupported roof, wall, or floor spans. The vertical closure rate decrease...
The Price of TUC Leadership (1961) is a serious criticism of the TUC by the General Secretary of another large trade union. It contends, among other things, that the TUC bore responsibility for Labour’s defeat in the 1959 General Election, and for the decline in the influence and effectiveness of the trade union movement. It also criticises the leadership and its public relations, and covers the part played by the union in the de-nationalization of the steel industry.
A collection of addresses and essays produced over an eighteen year period by the California Department of Water Resources.
First multi-year cumulation covers six years: 1965-70.
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