hard bottom

hard bottom

[′härd ‚bäd·əm]
(mining engineering)
A condition encountered in some opencut mines wherein the rock occasionally does not break down to grade because of an extra-hard streak of ground or because insufficient powder is used.
References in classic literature ?
With this end in view, every Sunday during my first year of office I drew the whole population of the township, willing or unwilling, up on to the mountain, where I myself had traced out on a hard bottom the road between our village and the highway to Grenoble.
Let us settle ourselves, and work and wedge our feet downward through the mud and slush of opinion, and prejudice, and tradition, and delusion, and appearance, that alluvion which covers the globe, through Paris and London, through New York and Boston and Concord, through Church and State, through poetry and philosophy and religion, till we come to a hard bottom and rocks in place, which we can call reality, and say, This is, and no mistake; and then begin, having a point d'appui, below freshet and frost and fire, a place where you might found a wall or a state, or set a lamp-post safely, or perhaps a gauge, not a Nilometer, but a Realometer, that future ages might know how deep a freshet of shams and appearances had gathered from time to time.
Unlike red snapper and grouper, sea bass often spread out over hard bottom in schools covering 100 yards or more.
Another item that caught my eye during a second lunch break was-an extra large jumbo magnum blind bag with triple-walled hard bottom that still probably lets water in.
Let us settle ourselves, and work and wedge our feet downward through the mud and slush of opinion, and prejudice, and tradition, and delusion, and appearance, that alluvion which covers the globe, through Paris and London, through New York and Boston and Concord, through Church and State, through poetry and philosophy and religion, till we come to a hard bottom and rocks in place, which we can call reality, and say, This is, and no mistake .
Snow tubing is the latest snow sports craze and involves flying down a slope in a large inflatable ring with a hard bottom base.
Services requested include, but may not be limited to: *Pre-deployment reef layout, planning and design of nearshore fish/dive reef (SR-27) within the boundaries of the permitted area and; *Pre-deployment bottom surveys including documentation to verify that the intended reef locations do not have submerged grass beds, shellfish, other hard bottom communities, corals or historic artifacts.
When the lure finds hard bottom, you should detect a distinct clunk.
Low-friction, heavy-duty skate wheel conveyors allow shallow flow lane angles that support either returnable totes or hard bottom containers.
but we modern, hard bottom butch shoes click click in the kitchen as
Implementation and operation of the Lower Breton Sound diversion structure as proposed would render about 6,173 ha of hard bottom immediately east of the Mississippi River unsuitable for the sustained cultivation of oysters.