Respondent was employed by appellant in a silver and lead quartz mine, situated near the town of Gem, in the state of Idaho. He was engaged as a “mucker.” A mucker is one who removes the ore, rock, and debris thrown down by the miners in blasting. His work must be done, in part at least, ahead of the timbering which is to afford protection against the falling of ore, rock, and debris. At the time of the accident, respondent claims that there was a distance of thirty or thirty-five feet between the last section of timbers and the “face of the workings.” The timbers were constructed in sections of about five feet in length. Bespondent said that he had been working at the same place where he was hurt about two weeks before. There was some evidence that work had been done at this place the second or third day before the accident. Bespondent and others testified that the overhead ore and rock would “air-slack” when left for a few days, and was liable, on account thereof, to cave or fall. Bespondent testified that he had been at work but a few minutes on the day of the accident when a portion of the overhanging ore and rock fell upon him, causing him great injury. He contends that it was the duty of the appellant to have inspected this working place carefully, *457and to have kept it in a safe condition for him; that he had a right to reply upon the performance of this duty of inspection by the master; that the duty was neglected or improperly performed; and that his injury was the direct proximate result of such negligence on the part of the appellant. The trial resulted in a verdict and judgment in favor of the respondent. From this judgment, appeal is taken to this court.
Appellant contends that the evidence is insufficient to support the verdict, and that its motions for judgment, made at the close of plaintiff’s case and at the close of the entire evidence, should have been granted. Numerous errors are also assigned as to the introduction of evidence and as to the instructions.
Respondent placed upon the stand a witness by the name of Cook, who had been.mining a little over four years, and had worked in four or five different mines. He was asked the following question: “Mr. Cook, you know generally what the rules are among the Coeur d’Alene mines there as to the duties of the shift boss and miners and muckers?” Appellant objected to the question,, but the objection was overruled. The witness answered that he thought he did, and, over appellant’s objections, answered numerous questions as to the respective duties of the shift boss, miners, and muckers, and as to methods of mining. One of these questions asked him, was as follows: “What is the fact, if you know, when a mucker is sent to a stope to muck, as to his being required to inspect or bar down?” This was objected to, but the objection was overruled, and the witness answered.' Another question was: “’When a laborer, a mucker, is sent to a stope to muck, is there any obligation upon him, or is he expected to test the ground to see if it is safe?” Objected to, objection over*458ruled, aud answer of witness taken. This witness had not worked in the Heela mine, and was not shown to know anything about appellant’s rules or methods. His evidence as to the rules of some other company was immaterial. His evidence as to the respective duties of shift, boss, miner, and mucker in appellant’s mine was incompetent, as he did not show that he knew anything about the rules, customs, or methods of work employed in this mine. The duty of inspection is imposed as a matter of law. The method by which it is done is a matter resting with the master. He may have it done by the foreman, by the shift boss, by the “mucker” himself, or by any one else, so long as he be competent for the purpose. The master, in performing this duty, is under no obligation to use the same method, or the same officer' or workmen, as does some other mining company. Consequently, evidence concerning the rules of certain other mining companies would be immaterial and incompetent to show the respective duties of various employees in appellant’s mine. The action of the trial court in admitting such evidence constituted prejudicial error.
Among other instructions, the court gave the following t
“(1) The court instructs you that it is a general rule that a servant entering into employment which is hazardous assumes the usual risks of the service, and those which are apparent to ordinary observation, and when he accepts or continues in the service with knowledge of the character or obstructures from which injury may be apprehended, he. also assumes the hazard incident to the situation. Those not obvious assumed by the employee are such perils as exist after the master has used due care and precaution to guard the former against danger and the defective condition of the structures or the appliances which, by the exercise of reasonable care of the master, may be apprehended and obviated, and from the conse*459quences of which he is relieved from responsibility to the servant by reason of the latter’s knowledge of the situation, if such as is apparent to his observation. It is sufficient to say, however, that the law does not under any circumstances exact from the servant the use of diligence in ascertaining such defects, but charges him with knowledge of such only as are open to his observation; beyond this he has a right to assume without inquiry or investigation that his employer has discharged his duty of furnishing him with a reasonably safe place in which to perform his duties.”
The meaning of much of this instruction is obscure. The last part thereof is clearly erroneous. The law does require the seawant to use some diligence in ascertaining defects, and in protecting himself from the dangers to be reasonably apprehended therefrom—such diligence and care as a man of ordinary prudence would exercise under the same circumstances. He must, to protect himself from injury, use diligence commensurate with the dangers known by him to be incident to- the character and place of work wherein he is employed. Mining is known to be dangerous work. [Respondent admits that he knew this, that he knew there was more or less danger from falling rock, that “air-slacking” was constantly going on, which loosened, the rock overhead and made it more dangerous from day to day. As a “mucker,” it was necessary for him to do much of his work ahead of the timbering—that is, he must remove the ore thrown down by the blasting, before the timbers could be placed in position to protect him. The very nature of mining is such that ihe working places of the miners and “muckers” are constantly undergoing changes. These changes are necessarily accompanied with dangers to the workmen, notwithstanding careful inspection and protection by the master. The “safe place” rule can be applied only in a qualified sense. It is the *460duty of the master to keep these -working places in as safe condition as he can, consistently with the reasonable and practicable carrying on of the business. The working places being necessarily dangerous, it is incumbent upon the master to provide for inspection, such inspection as will afford as full security as can reasonably be made practical in view of the nature of the work. But the very conditions of danger which impose the duty of careful inspection upon the master also impose a corresponding duty of care upon the servant.
The master has the right to suppose that the servant will be alert, and observe that diligence to detect and avoid dangers which a man of ordinary prudence would exercise for self-preservation, under like conditions. In the case of Anderson v. Inland Tel. etc. Co., 19 Wash. 575, 581, 53 Pac. 657, 658, 41 L. R. A. 410, this court, speaking by Dunbar, J., said:
“While there is no gainsaying the rule that under ordinary circumstances the employe has the right to rely upon the fact that the master will furnish him a safe place to work and safe appliances, yet the law does not intend that this shall be a blind and unreasonable reliance, but that reasonable men shall exercise in a reasonable manner the faculties of which they are possessed.”
It will be seen that the idea here expressed is absolutely at variance with that presented in the instruction hereinbefore quoted. In the case of Olson v. McMurray Cedar Lum. Co., 9 Wash. 500, 502, 37 Pac. 679, 680, this court, speaking by Dunbar, J., used the following language:
“Men, when they are working around dangerous ma-, ehinery, must notice. Their faculties and senses are given them for the purpose of self-preservation, and they must exercise them to a reasonable extent.”
*461This language is plain and unequivocal, and absolutely inconsistent with the idea that the servant is not called upon to use “diligence in ascertaining the condition of his surroundings.” What was said in the two- cases just cited is especially applicable to one working in a mine where his working place is necessarily beset with more or less peril. In the case of Steeples v. Panel etc. Box Co., 33 Wash., 359, 865, 14 Pac. 415, 416, this court said:
“It is true the plaintiff testifies that he did not know that the platform was without a guard, but a plaintiff cannot recover simply by making a statement of that kind, if, under the circumstances, it was his duty, as a reasonably prudent man, to have made such an examination as would have resulted in the desired information.”
In the case of Cully v. Northern Pac. R. Co., 35 Wash. 241, 77 Pac. 202, this court, at page 241, said:
“Granting a nonsuit is the next error assigned. The appellant seeks to invoke the rule in this case that it is the duty of the master to furnish the servant with a safe place in which to work. This rule, however, has no application to this class of employment. As was said in Kath v. Wisconsin Cent. R. Co. (Wis.), 99 N. W., at page 221: ‘The place to work is being changed constantly, and is necessarily incomplete and dangerous; and the employe knows it, and accepts such risks as are ordinarily present in such operations;’ citing Porter v. Silver Creek etc. Co., 84 Wis. 418, 54 N. W. 1019; Gulf etc. R. Co. v. Jackson, 65 Fed. 48; Moon Anchor etc. Mines v. Hopkins, 111 Fed. 298; Armour v. Hahn, 111 U. S. 313, 4 Sup. Ct. 433, 28 L. Ed. 440. To the same effect also is Swanson v. Great Northern R. Co., 68 Minn. 184, 70 N. W. 978, . .
The doctrine here announced is particularly applicable to the case at bar. In the case now before us the plaintiff testified that he knew that “air-slacking” was constantly *462going on in the ore and rock overhead, and that the same were liable to- fall. This constant, insidious change going on as a result of the forces of nature, together with the changes being made by the blasting and removal of ore, necessarily carried with them dangers. Plaintiff admits that he knew of these matters—that he knew that the business was a dangerous one. To say that such a servant, with such knowledge, in such a working place, may put absolute reliance upon the assumption that his master furnishes him a safe place, is to announce a proposition the very statement of which would seem to refute its correctness.
As was said in Jennings v. Tacoma R. etc. Co., 7 Wash. 275, 278, 34 Pac. 937, 938:
“No sane man is expected to act on an assumption which he knows to be false. It is a man’s duty to exercise common sense when in the employment of a master, as well as any other time. The master has a right to rely upon the servant doing this.”
A man of common sense could not assume a mining place to be safe, which, according to his own testimony, he knew to be overhung with ore, rock, and debris which was naturally and necessarily liable to be precipitated as a result of “air-slacking,” blasting and removing of ore, and the law of gravitation.
In the case of Bier v. Hosford, 35 Wash. 544, 554, 77 Pac. 867, 871, this court said:
“Physical facts, apparent to individuals of the most ordinary understanding, particularly those things capable of sensation and touch, oannot be overcome or discredited by word of mouth. . . . Within the rule of law enunciated in Christianson v. Pacific Bridge Co., supra, respondent was not obliged, in the presence of apparent and obvious danger, to’ obey the alleged directions of Mrs. *463Dick, her fellow-servant and companion feeder at the mangle, to rush the work unreasonably, thereby putting life and limb in jeopardy.”
In Bullivant v. Spokane, 14 Wash. 577, 579, 45 Pac. 42, this language was used:
. . when it plainly appears, as it does in this case, that the party who. was injured could see and appreciate the peril to which he was exposed by his employment, it must be concluded as a matter of law that, he accepted such peril as incident to his employment.”
In the case of Hoffman v. American Foundry Co., 18 Wash. 287, 51 Pac. 385, this court, speaking by Gordon, J., said:
“It is the duty of the master to furnish to. the servant reasonably safe tools, machinery and appliances with which to work, and it is the servant’s duty to.exercise due care to avoid injury. These duties are reciprocal and exist by-implication based upon the contract of employment. The implied duty of each is measured by the standard of ordinary care.” . . . All machinery is more or less dangerous, and it becomes the duty of persons connected therewith to familiarize and acquaint themselves with the dangers incident thereto. ... In the exercise of ordinary care and prudence he should either Jiave ascertained the facts, of pursued a course known to be safe.”
In Danuser v. Seller & Co., 24 Wash. 565, 567, 64 Pac. 783, this court said:
“It is well established that the employer must furnish the employee with a safe place to work, but it is just as well established that the employee assumes the risks of apparent peril.”
In Robare v. Seattle Traction Co., 24 Wash. 577, 581, 64 Pac. 784, 785, this court, speaking by Dunbar, J., said:
“He [the servant] must necessarily have known that the tearing down and building up of an old structure of *464this kind was a dangerous occupation. , . . In addition to this, he knew of the general condition of the road; knew that these ties had been sawed off at stated intervals for the purpose of driving these piles; and it was his duty to1 be careful under such conditions, whether he had heard the warning to be careful or not. . . . From the testimony of the respondent alone we are forced to the conclusion that he did not exhibit that care and watchfulness which he should have done under the circumstances, that the danger was apparent, and that the company was, therefore, not responsible for the damages which 'ensued.”
The principle involved in the last case was similar to the one here. The work that was being done necessarily rendered the premises more or less unsafe. It will be noticed that the court said that “it was his duty to be careful” and that the court found that he did “not exhibit that care and watchfulness” which he should have done. This language shows conclusively that it was the court’s idea that there was some duty of “watchfulness” on the part of the servant, and that he must use some diligence to ascertain the whereabouts of the dangerous places and protect himself therefrom. It would seem in principle that a danger to the premises made by sawing off some of the timbers of the bridge which a servant was to walk over would not be very different from those occasioned in a stops or tunnel of a mine1, by the processes of nature and the progress of the work of mining.
In the case of Forbes x. Boone Val. Coal & R. Co., 113 Iowa 94, 84 N. W. 970, the supreme court of Iowa said:
“. . . the servant, in accepting employment in a hazardous business, assumes such risks as are incident to the ordinary discharge of his duties, but not, of course, the risk of dangers arising from unsafe or defective machinery or surroundings, unless he has, or may be presumed to have had knowledge or notice thereof. If, however, he *465knows of the master’s method of doing business, hazardous though it be, and continues in the work, without objection, after knowledge of the character of the place or the condition of the appliances, he is deemed in law to have assumed the risk, and cannot recover damages if injury follows. . . . He had worked in coal mines for many years, and knew or must have known of the customs prevailing in these mines. If he did not know, it was because of his want of- ordinary care and observation. . . . If he did not know thereof it was because of his supine neglect.”
In the case of Jones v. Florence Min. Co., 66 Wis. 268, 28 N. W. 201, 57 Am. Rep. 269, the supreme court of Wisconsin said:
“. . . the danger .resulting from leaving loose stones or ore in the roof or sides of the mine is a danger which the employer may well impose the duty of guarding against upon those working in the mine. Such danger is the direct result of their operations, and they are always on the ground, and have better facilities for knowledge when a danger of that kind exists, and for removing the same, than the pit boss or captain of the mine, and there would seem to be no ground for holding that the owner of the mine may not impose such duty upon the miners themselves.”
In the case of Cherokee etc. Min. Co. v. Britton, 3 Kan. App. 292, 45 Pac. 100, the court said:
“While it was its duty to provide him with a reasonably safe place to perform the labor he was engaged in, it was only bound to exercise ordinary care in providing for the safety of the men engaged in the mine, so far as it could reasonably be expected. It was not an insurer against unforeseen accidents, which are liable to happen from the action of the weatherj or the unanticipated slipping of earth, slate, coal or stone from the walls or roof of the mine.”
*466In the case of Finlayson v. Utica Min. etc. Co., 67 Fed. 507, at page 510, the court used the following language:
“It is the general rule that it is the duty of the master to exercise ordinary care to provide a reasonably safe place in which the servant may perform his services. But this rule cannot be justly applied to cases in which the very work the servants are employed to do consists in making a dangerous place safe, or in constantly changing the character of the place' for safety as the work progresses. The duty of the master does not extend to keeping such a place safe at every moment of time as the work progresses. The servant assumes the ordinary risks and dangers of his employment, that are known to him, and those that might be known to him by the exercise of ordinary care and foresight. When he engages in the work of making a place that is known to be dangerous, safe, or in a work that in its progress necessarily changes the character for safety of the place in which it is performed as the work progresses, the hazard of the dangerous place and' the increased hazard of the place made dangerous by the work are the ordinary and known dangers of such a place, and by his acceptance of the employment the servant necessarily assumes them.”
In Coal & Mining Co. v. Clay’s Adm'r, 51 Ohio St. 542, 38 N. E. 610, 25 L. R. A. 848, the court said:
“Here the place was not furnished, as in any sense a permanent place of work, but was a place in which surrounding conditions were constantly changing, and, instead of being a place furnished by the master for the employees, within the spirit of the decisions referred to, was a place, the furnishing and preparation of which was itself part of the work which they were employed to perform.”
In the case of Oleson v. Maple Grove Coal & Min. Co., 115 Iowa 74, 87 N. W. 736, the court said:
“The doctrine that the master must provide a safe place has no application to a case where the place becomes un*467safe during the progress of the work. As to such danger, the law only requires reasonable care to employ competent men and provide suitable material. . . . The employe ‘is bound to take notice of the ordinary operation of familiar natural laws, and to govern himself accordingly. Failing to do so, he takes the consequences. He cannot charge such consequences upon the master, when he can see that which is open and apparent to a person of ordinary intelligence,’ ”
In Petaja v. Aurora Iron Min. Co., 106 Mich. 463, 64 N. W. 335, 66 N. W. 951, 58 Am. St. 505, 32 L. R. A. 435, the supreme court of Michigan said:
“The claim of the plaintiff is that the master did not furnish a safe place to work. In our opinion, this place where the men were at work was an incident of mining. It was a result of the common work of the miner and the trammer, both of whose labor combined to make it. After the miner had loosened the ore and the trammer had removed it, it was ready for the timber men, who followed up when notified, putting in sets, which enabled the process of mining to be carried further. The undisputed evidence shows that the trammers and miners had not put the newly opened space in condition for the timber men and that the miners had not caused them to be notified that their services were required.”
In the case of Knight v. Cooper, 36 W. Va. 232, 14 S. E. 999, the supreme court of that state said:
“If, as he states on the second trial, the clearing away of fallen slate for the setting up of props was one of the things he had to do as a miner, then that was one of the ordinary hazards incident to his dangerous employment.”
In the case of Ohio etc. R. Co. v. Pearcy, 128 Ind. 197, 27 N. E. 479, the court said:
“. . . and the employee is charged with the knowledge of such defects as he would have ascertained by the exercise of reasonable care and diligence in this behalf.”
It will be seen by these cases that the exercise of diligence on the part of the servant to- ascertain and protect *468against dangers that are liable to occur is regarded as one of his duties. Eespondent’s counsel cite and apparently rely much upon the case of Union Pac. R. Co. v. Jarvi, 53 Fed. 65, but the decision of that case was made by the same court which decided the ease of Finlayson v. Utica etc. Min. Co., hereinbefore cited, and in the latter case the distinction was clearly pointed out between the facts of the Jarvi case and those of a ease like the one at bar. We think the instruction given by the trial judge, as herein-before quoted, was, as to the first portion thereof indefinite, uncertain, and confusing, and as to the last portion thereof, an incorrect statement of the law.
Some other of the instructions are open to criticism, but what we have said regarding the one above quoted we think will afford a sufficient guide upon a new trial as to all. As to the sufficiency of the evidence-, we express no opinion. Owing to the large amount of incompetent evidence and the erroneous theory upon which the case was tried and the jury instructed, we feel that a new trial should be had.
The judgment o-f the honorable superior court is reversed, and the case remanded for a new trial.
Mount, O. J., Crow, and Eudkin, JJ., concur. Hadley and Fullerton, JJ., took no part.